MINJ-4


microINJECTOR™ Brass Straight-Arm Needle Holder

MINJ-4:  $64.86 † - In Stock

Tube Fitting
(see Photos below)

Tubing Length

Needle Diameter

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The Tritech Research Brass Straight-Arm Needle Holder is compatible with the microINJECTOR™, or any other microinjection system.  Using a simple compression system, it holds microcapillary injection needles from 0.5-1.5mm in diameter.  Customized versions are available for 2.0mm and other sized injection needles.  The standard needle holder shaft is 4mm (5/32 in) in diameter with a total holder length of 140mm (5.5 in) for maximum compatibility with Narishige and other micromanipulators.  Other sizes are available by special order.

The MINJ-4 comes with a quick-connect and tubing but we are happy to customize your needle holder connection according to your needs. Please choose the one you need from the pre-defined choices (see pictures below) or call us at 310-446-4460.

MINJ-4 QuickConnect Fitting
MINJ-4 w/ Quick Connect for
2mm OD tubing for MINJ-1,
MINJ-D, MINJ-FLY, etc.
MINJ-4 Swage Fitting
MINJ-4 Swage Fitting
1.5mm OD tubing
For Non Tritech devices
MINJ-4 Swage / Luer Fitting
MINJ-4 Swage / Luer Fitting
For MINJ-PD and Syringes
 
MINJ-4 Swage / Swage Fitting
MINJ-4 Swage / Swage Fitting
for MINJ-1 MINJ-D MINJ-FLY
built prior 03/2015


The following pictures show how the fittings hold a capillary needle onto our older MINJ-4 needle holders. Here is the older model:



how to mount a capillary needle onto the MINJ-4 needle holder

The newer current model doesn't need MINJ-5 and MINJ-6 can be specified for 0.5mm, 1.0mm, or 1.5 mm glass needles:

how to mount a capillary needle onto the MINJ-4 needle holder

This is called a "quick-change" needle holder because once the fittings are assembled, to change needles usually only requires the user to loosen then main nut, remove one needle, insert another, and retighten the nut. The brass and silicone compression fitting usually maintain their positions, so the main nut doesn't need to be removed. However, if a new needle can't be inserted, carefully remove the nut, collect the fittings, and thread them onto the new needle as shown above.


Here is a video that shows how to change the tubing in a quick-connect:


† 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.