Sechrist Air/Oxygen Mixer


Sechrist Air / Oxygen gas mixers allow a precise mixing of air and oxygen for many clinical applications. Available in high flow, low flow and even custom configurations for general and specific applications, the simple but effective design results in a lower cost, better reliability and lower maintenance costs then many of its competitors.



The precise design of Sechrist mixers provides assurance of oxygen concentration accuracy within +1% point even in circumstances involving wide variances in supply gas pressures. Pole or wall mounting configurations as well as dual outlet connections are available for most models.

Sechrist Air/Oxygen Mixer
Product Code: S3500CP-G


Sechrist mixers incorporate integral filtration of supply gases. A 0.1μ water trap/ filter is provided for the air inlet connection and both gas supply connections are protected by 7μ sintered stainless steel (non-corroding) filters.


The A3500 CP-G Model is specifically designed for use in ECMO and standard bypass applications:

Accuracy*: +3%
Maximum Flow: 40 LPM
Bleed Flow: 2.5 - 4.5 LPM @ 8 LPM
FIO2 Range: .21 +0.1 to 1.0 -0.1
Gas Supply Range: 50 psi + 10 psi

*NOTE: Mixers will maintain the delivered FIO2 within + 1% point of the selected value even with fluctuations in supply pressures. An additional 2% variance may result from the readability of the set point and scale error.

As well as a distributor, Chalice are also the only authorised service agents for the Sechrist 3500 blender in the UK – allowing us to repair, service and re-calibrate units to maintain or further extend a units warranty.



We offer a 24 month service contract on all new units which includes:

2 x 6 monthly service:

Visual inspection of the unit and the replacement of both inlet filters.

1 x 12 month service:

Visual inspection of the unit, the replacement of both inlet filters and the recalibration of the unit to bring it back within manufacturers original settings.

1 x 24 month service:

Complete overhaul of the unit replacing all o-rings, filters, diaphragms, washers and seals and the recalibration of the unit to bring it back within manufacturers original settings.

Terms and conditions apply. 

Please contact a sales manager for more details on the cover we can offer.