Need advice on uHPLC pump purchase
Posted: Thu Jan 22, 2015 4:25 pm
Going to purchase a new Thermo Scientific uHPLC pump for our Ultilimate 3000 system and I would appreciate some feedback on the two options we have:
1. LPG-3400SD Quaternary Analytical Pump (Part No. 5040.0031)
2. HPG-3400SD Binary Analytical Pump w/Solvent Selection Valve (Part No. 5040.0041)
for additional product information and the design of these two pumps please refer to pages 6-7 of this brochure:http://www.thermoscientific.com/content ... -Pumps.pdf
With option 2 we would also need to purchase SRD 3400 Solvent rack w/4 degasser channels (Part No. 5035.9245). Option 1 has degasser channels included as part of the pump module. This is not a major concern as our budget allows for either purchase. We are more concerned with the accuracy and precision of the pump and gradient formation.
Option 1 uses low-pressure proportioning for gradient formation, whereas option 2 uses high-pressure proportioning. We routinely run gradient analysis, so would high-pressure be better for our application? Also we run at high pressures using core-shell technology columns.
We would prefer responses from actual users of Thermo Systems or similar setups from different manufacturers. We are planning on making this purchase in the next 6 months or so. Looking forward to the discussion! Thank you!
1. LPG-3400SD Quaternary Analytical Pump (Part No. 5040.0031)
2. HPG-3400SD Binary Analytical Pump w/Solvent Selection Valve (Part No. 5040.0041)
for additional product information and the design of these two pumps please refer to pages 6-7 of this brochure:http://www.thermoscientific.com/content ... -Pumps.pdf
With option 2 we would also need to purchase SRD 3400 Solvent rack w/4 degasser channels (Part No. 5035.9245). Option 1 has degasser channels included as part of the pump module. This is not a major concern as our budget allows for either purchase. We are more concerned with the accuracy and precision of the pump and gradient formation.
Option 1 uses low-pressure proportioning for gradient formation, whereas option 2 uses high-pressure proportioning. We routinely run gradient analysis, so would high-pressure be better for our application? Also we run at high pressures using core-shell technology columns.
We would prefer responses from actual users of Thermo Systems or similar setups from different manufacturers. We are planning on making this purchase in the next 6 months or so. Looking forward to the discussion! Thank you!