Welcome, Sign In First time visitor? Create a New Account
Your cart is empty

Rheodyne Manual Sample Injectors

Types and Capabilities

Models ending in 25 (i.e. 7725) are dual mode injectors. Dual mode injectors can use both the partial-filling and the complete-filling method for loading the sample loop. They are variable volume injectors because they allow the loading of various sample volumes. These dual mode injectors, also called front-loading injectors, have a needle port for loading sample built into the handle. The unique injection port design allows the tip of the needle to connect directly to the sample loop for no sample loss during loading.

Models ending in 10 (i.e. 7010) are single mode injectors. Single mode injectors use only the complete-filling method to load the sample loop. They are called fixed loop injectors as the sample loop size determines the sample volume. These injectors require a Loop Filler Port accessory, as a needle port is not built into the valve handle. There is not a direct connection between the syringe and the sample loop. Therefore, an excess of sample must be used to overfill the Loop Filler Port and completely fill the sample loop.

Models with an "i" suffix (i.e. 7725i) are identical to the models with the same numbers but the “i” designates a built-in position sensing switch. The switch provides the chromatograph with a reproducible start signal to mark the injection time in the data system.

The reproducibility of manual sample injectors depends on operator skill, syringe calibration, and the loading method. Partial-filling method is typically reproducible to 1.0% relative standard deviation (RSD). Complete-filling method is reproducible to 0.1% RSD for loops 5 µL.



Item Name Product Image Price+

Rheodyne Dual Mode PEEK Manual Sample Injectors - 3725

4000 psig - Differential Pressure, Max Prep  Scale Dual Mode 2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most suitable...
Rheodyne Dual Mode PEEK Manual Sample Injectors - 3725
Live chat below or contact us for latest price.
... more info

Rheodyne Dual Mode S/Steel Manual Sample Injectors - 3725-038

5000 psig - Differential Pressure, Max Prep  Scale Dual Mode 2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most suitable...
Rheodyne Dual Mode S/Steel Manual Sample Injectors - 3725-038
Live chat below or contact us for latest price.
... more info

Rheodyne Stainless Steel Manual Sample Injectors - 7410

How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most suitable model. Types and Capabilities Models ending in 25 (i.e. 7725) are dual mode injectors....
Rheodyne Stainless Steel Manual Sample Injectors - 7410
Live chat below or contact us for latest price.
... more info

Rheodyne High Pressure S/Steel Switching Valve 6 Port - 7000

Analytical Scale Material :- Stainless Steel Tubing OD :-  0.0625 in Positions :- 2 Ports :- 6 Differential Pressure, Max :-  7000 psig How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample...
Rheodyne High Pressure S/Steel Switching Valve 6 Port - 7000 £820.86Buy Now

Rheodyne Analytical Rear Loading Injection Valve - 7010

Rheodyne Analytical Rear Loading Injection Valve Product Number: 7010 Specifications: Pressure Rating Max (psi) 5000 Valve Type Single Mode Ports 6 For Tubing OD (in) 1/16 Material Stainless Steel Positions 2 ...
Rheodyne Analytical Rear Loading Injection Valve - 7010 £898.93Buy Now

Rheodyne Single Mode PEEK Manual Sample Injectors - 9010

5000 psig - Differential Pressure, Max Analytical Scale Single Mode 20L Loop 2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the...
Rheodyne Single Mode PEEK Manual Sample Injectors - 9010 £1,244.37Buy Now

Rheodyne 7725 Stainless Steel Analytical Manual Sample Injectors

7000 psig - Differential Pressure, Max Analytical Scale Dual Mode, w/MBB, 2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most...
Rheodyne 7725 Stainless Steel Analytical Manual Sample Injectors £1,284.15Buy Now

Rheodyne Dual Mode PEEK Manual Sample Injectors - 9725

5000 psig - Differential Pressure, Max Analytical Scale Dual Mode w/MBB2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most...
Rheodyne Dual Mode PEEK Manual Sample Injectors - 9725 £1,293.31Buy Now

Rheodyne Dual Mode PEEK Manual Sample Injectors - 9725i

5000 psig - Differential Pressure, Max Analytical Scale Dual Mode w/MBB, Position Sensor2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you...
Rheodyne Dual Mode PEEK Manual Sample Injectors - 9725i £1,322.14Buy Now

Rheodyne 7725i S/Steel Manual Analytical Sample Injectors Switch

Click Here For Exploded View of Sample Injectors (7725(i), 9725(i), 3725(-038)(i)) 7000 psig - Differential Pressure, Max Analytical Scale Dual Mode, w/MBB, Position Sensor2 Positions 6 Ports How to Choose a Sample Injector  Table I below...
Rheodyne 7725i S/Steel Manual Analytical Sample Injectors Switch £1,338.35Buy Now

Rheodyne Dual Mode PEEK Manual Sample Injectors - 3725i

4000 psig - Differential Pressure, Max Prep  Scale Dual Mode with Position Sensor2 Positions 6 Ports How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose...
Rheodyne Dual Mode PEEK Manual Sample Injectors - 3725i £1,773.11Buy Now

Rheodyne 8125 Stainless Steel Injector Micro-Scale Dual Mode

How to Choose a Sample Injector  Table I below compares the characteristics of Rheodyne® manual sample injectors and will help you choose the most suitable model. Types and Capabilities Models ending in 25 (i.e. 7725) are dual mode injectors....
Rheodyne 8125 Stainless Steel Injector Micro-Scale Dual Mode £1,816.48Buy Now