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PourBoy Sterile Media Dispenser


PourBoy® 4 Sterile Media Dispenser, incl. Pump-Tubing Set

  PB4:  $918.92 - In Stock
Image for PourBoy® 4  Sterile Media Dispenser, incl. Pump-Tubing Set coming soon!
This new device is so good, you can actually get excited about pouring Petri dishes. We periodically ask labs for their "wish lists", and on more than one occasion, researchers have said, "A good, inexpensive, reliable sterile media dispenser." Most devices on the market are either expensive, unreliable peristaltic pumps, or expensive unreliable motor-driven, syringe-based pumps.

     At Tritech Research, we designed a system combining simple, yet elegant, foot pedal controlled electronic dispensing circuitry with an inexpensive, detachable, miniature, high-tech electromagnetic pump that is easy to sterilize to make the PourBoy 4.  It can still be sterilized with alcohol, hydrogen peroxide, and hot water.  See our Extra Pump-Tubing set (PB4-PTS) product description for more details. The standard Single-speed model dispenses at a rate of approx. 3 mL / sec. The Variable Speed option allows for slower rates than this. For higher flow rates, we have added a High Speed pump option. This higher-capacity pump runs at about 12ml/sec, and it is availabel with a variable speed option as well.

Great new features on the PourBoy® 4 include:
  • easily user-calibrated to accurately deliver volumes from 0.1 to 999.0 mL
  • user-settable pause interval from 0.1 to 999 seconds between each dispensing operation
  • user memory to store common dispensing operations, i.e different Petri dish sizes
  • microprocessor-controlled accuracy, and a fully digital, wipe-to-clean membrane keypad

Note: The PourBoy® 4 pumps are designed to pump smooth liquids, like aqueous solutions, hot molten agar, and oils, but not particulate materials like grits, grains, pastes, etc.  For example, it is great for dispensing hot agar growth media into Petri dishes and dispensing sterile cell culture media, but not suitable for dispensing oatmeal or Drosohila food.  The PourBoy 4 is a new improved replacement for the PourBoy III.  It uses less expensive pumps yet they are less prone to jamming, and it has built-in temperature compensation for improved calibration accuracy over a wide range of media temperatures.  The PourBoy 4 is the preferred device for C. elegans labs that need to dispense NGM medium and pour thousands of Petri dishes per week. Here is a recent publication referencing the PB4:

Re-replication of a Centromere Induces Chromosomal Instability and Aneuploidy. Stacey L. Hanlon, Joachim J. Li. PLOS Genetics. April 22, 2015.

Feel free to contact us for your special dispensing needs, such as integration with computer-controlled multichannel dispensers.  If you can think of it, we can probably make it!



Approximate specifications of the PourBoy IV:

Height: 14cm (5.5")
Width: 15.5cm (6")
Depth: 20cm (8")
Weight: 1kg (2.2 lbs)
Pumping rate, full speed, Standard Pump, normal conditions: 3ml / sec
Pumping rate, full speed, High Speed Pump, normal conditions: 12ml / sec

FAQ's

Q: I am having media contamination problems when using my PourBoy. How can I sterilize the pump tubing set?
A: There is a very easy and effective way to sterilize the pump-tubing set - you can recirculate hydrogen peroxide through it. The "drugstore grade" 2% hydrogen peroxide works fine for this. While alcohol is pretty good at killing most bacteria, hydrogen peroxide is very effective at killing both bacteria and fungus, yet it is much more compatible with the internal components of the pump than bleach (which is not recommended). Of course, it is also important to do negative controls when looking for the source of contamination. Hopefully, you already know that there is no contamination already present in the "sterilized" media or the Petri dishes. The next time that you pour a batch plates you could manually pour a few using a sterile pipette to make sure that the source of the contamination is not upstream from the PourBoy.

Q: How precise and consistent is the PourBoy?
A: The PourBoy can deliver liquid volumes precisely from 0.1 mL to 999.0 mL. The precision is controlled by a microprocessor, which ensures consistency of aliquots. Precision using the standard pump is typically within 2%. Reproducibility can be affected by hydrostatic pressure - the difference in height between the input medium and the output dispensing tube. Do what you can to minimize changes in this height over the course of dispensing. This difference is more pronounced with the High Speed pump than the Standard pump.

Q: Do you have to hit the foot pedal for each dispensing operation?
A: The PourBoy has two dispensing modes, Manual and Automatic. In Manual Mode, the set volume is dispensed each time the foot pedal is pressed. In Automatic Mode, you can set the pause interval between deliveries of media, and press the foot-pedal once to start and once to stop the cycle.

Q: What is the difference between a Standard and a High Speed PourBoy?
A: The High Speed PourBoy is capable of a 5x faster rate of media flow than the standard version. The pump can dispense liquids at a rate of ~800ml/minute vs. ~180ml/min. Both versions have a variable speed option. Without the variable speed option, the pump always runs at its maximum speed; the variable speed allows it to slow down to flow rates below maximum.

Q: What happens if the PourBoy sterile media dispenser ends up clogged?
A: We ALWAYS recommend that you purchase an extra of pump-tubing set (PB4-PTS) with your PourBoy sterile media dispenser in case you encounter any problems with the pump or tubing getting clogged. This way, you can quickly change out the pump-tubing set, continue working, and worry about cleaning it later.

Q: Does the PB4 Media Dispenser need to be used in a sterile culture hood (for pouring plates)?
A: It is always best to pour sterile media in the hood to reduce the chance that mold spores or bacteria or dust will fall into your media. We recommend avoiding contamination at all costs! Also, if your hood has laminar airflow, that will also help to evaporate any condensation that forms on the Petri dish lids and to cool and gel the plates more quickly.

Q: After I pour agar in the plates, how long should I leave them exposed to the air before I cover them with the lids?
A: To avoid contamination, it's best not to wait at all. Before pouring the plates, if you allow the media to cool (while stirring on a hot plate with a magnetic stirring bar) to about 45-50°C, then you can close the dishes immediately. The resulting condensation should evaporate after several hours. We recommend first forming a stack of plates, for example, 5 plates tall (or 10 plates if you have good balancing skills). Then, we suggest lifting the top 4 plates, plus the lid from the bottom plate and shooting the media into the bottom plate. Next, lower the stack, putting the lid back on the bottom plate, and lift the top 3 plates plus the lid from the second-to-the-bottom plate, and shoot media into that 2nd plate, etc. It is important not to move the plates around after you have poured them and before they fully gel, to avoid a messy surface. You'll get the hang of it in no time!

Q: How can I avoid contamination of the plates and gelling media inside the PourBoy pump?
A: First, always follow the instructions that come with the PourBoy and autoclave 2 bottles of distilled water along with your media. Run one bottle of hot water through the PourBoy before you pour your media to preheat the tubing and pump and wash out / sterilize any contamination. Run the second bottle through the PourBoy *immediately* after you pour the last plate to wash out any media before it can gel in the system.

If you have a small emergency where you have to stop pouring plates for a few minutes, redirect the dispensing tube back into your flask of medium and use the automatic mode to keep recirculating the medium through the tubing so that it doesn't cool and gel in the tubing and pump! Even 1 minute of stationary medium could cause an unpleasant gelling problem.

Q: What is a recommended practice for pouring plates?
A: We recommend holding the output tube in your hand and aiming it into the dishes at a 30-45 degree angle. If you find that the stream is not smooth enough or dripping at the end of each dispensing operation, you could insert a piece of smooth glass or plastic tubing at the end of the output tube to act as a nozzle. Do make sure that the nozzle is still being sterilized with the same procedure you use on the rest of the tubing.

Q: Would you recommend the standard pump or the high-speed pump for pouring 100mm diameter petri dishes?
A: 100 mm diameter dishes will typically get filled half-way up with about 40 ml of agar-based media. The standard pump will dispense 40 ml in about 12-15 seconds. At this rate, it will be very tame and accurate within 1 - 2%. The high speed pump will dispense 40 ml in about 3 seconds. At this rate, it will come out with some force (but you should be able to avoid spattering by aiming properly) and will be accurate to about 5%. The variability is caused by hydrostatic pressure. When the height of the agar media surface is higher than the height of the tubing pointed at the dish, the flow through the pump is faster. The flow will become slower as the media is depleted, thus decreasing the height difference between the media surface and the dishes. The high speed pump is more sensitive to this effect than the standard pump. Having the media in a wider flask reduces the height difference as compared to having it dispensed from a tall, narrow flask. If you were dispensing 100 ml at a time, we would definitely recommend the high speed pump to save time. If you are pouring 15 ml or less into 60 mm petri dishes or smaller, we would recommend the standard pump for a tamer pour speed and higher accuracy.

Q: If I order the high speed model of the PB4, can I still adjust the speeds to slower rates?
A: Yes, as long as you order the variable pump speed option, you can adjust the speed from anywhere between about 1ml/sec to 12 ml/sec. It is also possible to switch back and forth between the high speed pumps and standard pumps by swapping out the pump and coil yourself. However, if you order the standard model, it will require a factory upgrade if you want to use the high speed pumps later.

Q: How can I prevent the tubing to stay submerged in the media instead of floating up to the top when using the High Speed PB4?
A: The extra vibration from the high speed pump could be causing the weight of the tubing outside the flask to pull on the tubing inside the flask. You can try taping the tube in place or shoving something against it at the neck of the flask to see if that solves the problem.

Q: Will I need a handle of some kind or is the tubing cool to the touch when dispensing molten agar?
A: The silicone rubber tubing provides a bit of insulation, so you probably will not need a handle when touching the tubing. You could use lab gloves which also will provide a layer of insulation.

† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Power Options
Pumping Speed
Variable Speed


Extra Pump-Coil for PourBoy® 4

  PB4-C:  $74.59 - In Stock
Image for Extra Pump-Coil for PourBoy® 4 coming soon!
The PourBoy® 4 coil is the brown part into which the pump cartridge (not included in this item) is inserted. To get the pump, click here. To get both pieces together, click here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump-Coil for HIGH SPEED PourBoy® 4

  PB4-C-HS:  $205.41 - In Stock
Image for Extra Pump-Coil for PourBoy® 4 coming soon!
The PourBoy® 4 coil for high speed pump is the brown part into which the pump cartridge (not included in this item) is inserted. To get the pump, click here. To get both pieces together, click here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Foot Pedal for PourBoy® 4

  PB4-FP:  $36.76 - In Stock
Image for Extra Foot Pedal for PourBoy® 4 coming soon!
In case your PourBoy's foot pedal gets damaged, we have replacements available!


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump for PourBoy® 4

  PB4-P:  $63.78 - In Stock
Image for Extra Pump for PourBoy® 4 coming soon!
This includes ONLY the pump. The pump is a small black and white finger-sized cartidge that inserts into the black coil. To get the pump with a new set of tubing included, click Here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump for HIGH SPEED PourBoy® 4

  PB4-P-HS:  $216.22 - In Stock
Image for Extra Pumpâ for PourBoy® 4 coming soon!
This includes ONLY the high speed pump. The pump is a small black and white finger-sized cartidge that inserts into the black coil. To get the pump with a new set of tubing included, click Here. For a pump and coil, click Here


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump and Coil for PourBoy® 4

  PB4-PC:  $124.32
Image for Extra Pump and Coil for PourBoy® 4 coming soon!
This set includes the pump and coil for the PourBoy® 4. The pump (PB4-P) is a small black and white cartridge, which is often shipped in the middle of tubing with the PB4-PTS and the PB4. The coil is the black cylindrical part into which the pump cartridge inserts.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump and Coil for HIGH SPEED PourBoy® 4

  PB4-PC-HS:  $324.32
Image for Extra Pump and Coil for PourBoy® 4 coming soon!
This set includes the pump and coil for the PourBoy® 4 with the High Speed Option. The pump (PB4-P-HS) is a small black and white cartridge, which is often shipped in the middle of tubing with the PB4-PTS-HS and the PB4. The coil is the black cylindrical part into which the pump cartridge inserts.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump-Tubing Set for PourBoy® 4

  PB4-PTS:  $96.22 - In Stock
Image for Extra Pump-Tubing Set for PourBoy® 4 coming soon!
A must-have for all frequent plate-pourers is an additional pump-tubing set. Instead of resterilizing your pump-tubing set between plate pouring sessions, why not have another pump sterile, and ready to go when you are?

The PourBoy® 4 has an inexpensive, detachable, miniature, high-tech electromagnetic pump.  For longest pump life, we recommend autoclaving two bottles of water along with your media. Running the nearly-boiling water through the system before you start pouring agar-based media prewarms the pump, tubing, and kills the vast majority of contaminants (and/or washes them away).

The second bottle of water is run through immediately after pouring plates to clean any residual media from the system. We use this technique in our lab and have no problem with contamination of our LB, YPD, or NGM plates. In case of a stubborn contaminant, you can still sterilize with hydrogen peroxide (2% "drug-store-grade") or alcohol (bleach is not recommended). The tubing is pharmaceutical grade silicone rubber and can be autoclaved, but the pump itself cannot.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Quantity:


Extra Pump-Tubing Set for HIGH SPEED PourBoy® 4

  PB4-PTS-HS:  $258.38 - In Stock
Image for Extra Pump-Tubing Set for PourBoy® 4 coming soon!
A must-have for all frequent plate-pourers is an additional pump-tubing set. Instead of resterilizing your pump-tubing set between plate pouring sessions, why not have another pump sterile, and ready to go when you are?

The PourBoy® 4 has an inexpensive, detachable, miniature, high-tech electromagnetic pump.  For longest pump life, we recommend autoclaving two bottles of water along with your media. Running the nearly-boiling water through the system before you start pouring agar-based media prewarms the pump, tubing, and kills the vast majority of contaminants (and/or washes them away).

The second bottle of water is run through immediately after pouring plates to clean any residual media from the system. We use this technique in our lab and have no problem with contamination of our LB, YPD, or NGM plates. In case of a stubborn contaminant, you can still sterilize with hydrogen peroxide (2% "drug-store-grade") or alcohol (bleach is not recommended). The tubing is pharmaceutical grade silicone rubber and can be autoclaved, but the pump itself cannot.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Replacement Pump-fixing Screws for PourBoy® 4

  PB4-SC2:  $21.62 - In Stock
Image for Replacement Pump-fixing Screws for PourBoy® 4 coming soon!
These high-quality steel thumb screws are available in case you lose the set that came with your PourBoy® 4.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Tubing for PourBoy® 4

  PB4-T:  $32.43 - In Stock
Image for Extra Tubing for PourBoy® 4 coming soon!
Tritech Research has sourced high-quality FDA-approved Silicone Rubber tubing for the PourBoy® 4 Sterile Media Dispenser. Extra tubing typically comes in 8 foot lengths: 5 feet for the inlet side of your pump, and 3 feet for the outlet side of your pump. Note: This is not the correct tubing for the PourBoy 3 — if you are looking for that, click here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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PourBoy Sterile Media Dispenser


Extra Pump-Coil for PourBoy® III

  PB3-C:  $86.49 - In Stock
Image for Extra Pump-Coil for PourBoy® III coming soon!
The PourBoy® III coil is the black part into which the pump (not included in this item) is inserted. To get the pump, click here. To get both pieces together, click here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump for PourBoy® III

  PB3-P:  $124.32
Image for Extra Pump for PourBoy® III coming soon!
This includes ONLY the pump. The pump is a small silver finger-sized piece of metal, which is often shipped in the tubing with the PB3-PTS and the PB3.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Extra Pump and Coil for PourBoy® III

  PB3-PC:  $140.54
Image for Extra Pump and Coil for PourBoy® III coming soon!
This set includes the pump and coil for the PourBoy® II and III. The pump is a small silver finger-sized piece of metal, which is often shipped in the tubing with the PB3-PTS and the PB3. The coil is the black part into which it inserts.

The PourBoy® III pump and coil set is a combination of the PB3-P and the PB3-C. Depending on what iteration of the PourBoy® III you have you may require a particular replacement part.

If your coil is removable from the base unit you may need the PB3-PC or the PB3-P depending on whether or not your pump can be removed from the coil. If they are inseparable you will need the PB3-PC to replace both. If the pump can be removed, you may choose to replace only the pump while keeping the original coil by ordering the PB3-P, you may choose to replace both by ordering the PB3-PC, or you may choose to replace only the coil by ordering PB3-C.

However, on some iterations of the PourBoy® III the coil is permanently affixed to the base and only the pump can be easily replaced. In this scenario you would want to order the PB3-P in order to replace the pump. If you require a new coil for one of these units you will need to contact us for a more extensive repair.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
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Quantity:


Extra Pump-Tubing Set for PourBoy® III

  PB3-PTS:  $162.16 - Ships in 3-5 days
Image for Extra Pump-Tubing Set for PourBoy® III coming soon!
A must have for all frequent plate-pourers is an additional pump-tubing set. Instead of resterilizing your pump-tubing set in-between plate pouring sessions, why not have another pump sterile, and ready to go when you are?

     The PourBoy® III has an inexpensive, detachable, miniature, high-tech electromagnetic pump that is fairly autoclavable, but for longest pump life, we recommend autoclaving two bottles of water along with your media instead of autoclaving the pump itself... Running the nearly-boiling water through the system before you start pouring agar-based media prewarms the pump, tubing, and kills the vast majority of contaminants (and/or washes them away).

     The second bottle of water is run through immediately after pouring plates to clean any residual media from the system. We use this technique in our lab and have no problem with contamination of our LB, YPD, or NGM plates. In case of a stubborn contaminant, you can still sterilize with hydrogen peroxide (2% "drug-store-grade") or alcohol (bleach is not recommended). Autoclaving is permissible. Just unplug the pump from the controller base, wrap it (plus the input and output tubes) in aluminum foil, and autoclave.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
Tell a Friend!
Quantity:
Power options


Extra Tubing for PourBoy® III

  PB3-T:  $32.43 - In Stock
Image for Extra Tubing for PourBoy® III coming soon!
Tritech Research has sourced high-quality FDA-approved Silicone Rubber tubing for the PourBoy® III Sterile Media Dispenser. Extra tubing typically comes in 8 foot lengths: 5 feet for the inlet side of your pump, and 3 feet for the outlet side of your pump. Note: This is not the correct tubing for the PourBoy 4 — if you are looking for that, click Here.


† These are our list prices. If you are paying with an Institutional Purchase Order or by check, you qualify for a 7.5% discount. Click here to change your payment method and see the lower prices.
Tell a Friend!
Quantity: