Idex Stainless Steel Sample Loops

Stainless Steel Sample Loops

These high quality stainless steel sample loops have burr-free, square-cut ends to ensure a flush connection to valve ports. The size designations of loops are nominal. The actual volumes can differ from the theoretical designations because of the 0.001” ( 0.025 mm) tolerance of the metal tubing bore.

Accuracy of large metal loops (1.0 mm, 0.040” bore) is about ±5%, intermediate loops (0.5 mm, 0.020” bore) ±10%, and small loops (0.2 mm, 0.007” bore) ±30%.

Since both standards and unknowns are usually analyzed using the same sample loop, knowledge of the actual, accurate volume is rarely needed. If the sample loop volume must be known, it is best to calibrate the loop in place on the valve so the flow passages in the valve are also taken into account. An alternative to calibration is to use a dual mode injector and partial-filling method of loading. See the “Sample Loop Loading” Application Note.

Model 7725 Injector loops are not interchangeable with loops for the model 7125. The port angle for the 7725 is 30° whereas the port angle for the 7125 is 20° requiring the loops to have a different shape.

Model 8125 Micro-Scale Sample Injector requires special loops in the 5.0 μL to 50 μL range. The 8125 sample loops are made with 0.5 mm (0.020”) OD tubing.

 

Application NOTE:

How to Properly Install Sample Loops

  • Stainless Steel

Stainless steel sample loops are supplied with fittings that are not swaged onto the tube. It is important that the loop be completely bottomed in the injector port before the ferrule is swaged onto the tube. The depth of the tubing holes may vary slightly from port to port and from valve to valve. A fitting made up in one port may leave a small cavity in another port. The cavity causes high dispersion and peak distortion such as fronting, tailing, or broadening. It is good practice to label loop ends so they will be replaced in the same, respective ports that were used in swaging the ferrules. Hint: swaging ferrules separately on each side, into each respective valve port makes loop installation easier.

 

Serial Number

Description

3065-018

Stainless Steel Sample Loop for 3725 2mL

3065-019

Stainless Steel Sample Loop for 3725 5mL

3065-023

Stainless Steel Sample Loop for 3725 10mL

3065-025

Stainless Steel Sample Loop for 3725 20mL

7755-020

Stainless Steel Sample Loop for 7725/MXII 5 µL

7755-021

Stainless Steel Sample Loop for 7725/MXII 10µL

7755-022

Stainless Steel Sample Loop for 7725/MXII 20µL

7755-023

Stainless Steel Sample Loop for 7725/MXII 50µL

7755-024

Stainless Steel Sample Loop for 7725/MXII 100µL

7755-025

Stainless Steel Sample Loop for 7725/MXII 200µL

7755-026

Stainless Steel Sample Loop for 7725/MXII 500µL

7755-027

Stainless Steel Sample Loop for 7725/MXII 1mL

7755-028

Stainless Steel Sample Loop for 7725/MXII 2mL

7755-029

Stainless Steel Sample Loop for 7725/MXII 5mL

7755-200

Stainless Steel Sample Loop for VHP 5µL

7755-201

Stainless Steel Sample Loop for VHP 10 µL

7755-202

Stainless Steel Sample Loop for VHP 20µL

7755-203

Stainless Steel Sample Loop for VHP 50µL

7755-204

Stainless Steel Sample Loop for VHP 100µL

7755-217

Stainless Steel Sample Loop for VHP 25µL

7755-226

Stainless Steel Sample Loop for VHP 500µL

8020

Stainless Steel Sample Loop for 8125/8126 5 µL

8021

Stainless Steel Sample Loop for 8125/8126 10µL

8022

Stainless Steel Sample Loop for 8125/8126 20µL

8023

Stainless Steel Sample Loop for 8125/8126 50µL

1876

Stainless Steel Sample Loop Assembly 10mL

1877

Stainless Steel Sample Loop Assembly 20mL

7755-300

Stainless Steel Sample Loop for Titan HT 5µL

7755-301

Stainless Steel Sample Loop for Titan HT 10µL

 

 

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