Capabilities |
ViscoStar® |
microViscoStar® |
Differential Viscosity |
Sensitivity (minimum detectable sample) |
100 ng of 100 kDa polystyrene in THF at 1 mL/min, under typical GPC conditions
|
5 ng of 100 kDa polystyrene in THF at 1 mL/min, under typical UHPLC conditions
|
Differential pressure noise |
< 0.05 Pa |
< 0.05 Pa |
Differential pressure range |
6.9 kPa, protected against overpressure |
6.9 kPa, protected against overpressure |
Dynamic range |
135,000:1 |
135,000:1 |
Linearity |
0.5% of full scale |
0.5% of full scale |
Differential pressure drift |
< 2.5 Pa/hr |
< 1.25 Pa/hr |
Capillary bridge autobalance |
Thermal, leak-free mechanism |
Thermal, leak-free mechanism |
Sample shear rate |
5000 Hz with water @ 1 mL/min |
15000 Hz with water @ 1 mL/min |
Fluidics |
Max. flow rate |
Aqueous: 1.5 mL/min; THF: 3 mL/min |
Aqueous: 1 mL/min; THF: 1 mL/min† |
Delay volume options |
8.1, 5.4, or 2.7 mL standard; 16.2 mL optional* |
5.4 mL* |
Max. permissible pressure inlet to outlet |
690 kPa |
3000 kPa |
Wetted Materials |
316 stainless steel, PTFE, zirconium silicate, Kalrez®, Inconel, 26-1 Stainless Steel |
316 stainless steel, PTFE, zirconium silicate, Kalrez®, Inconel, 26-1 Stainless Steel, Nickel |
Temperature Control |
Range |
4 °C to 70 °C |
4 °C to 70 °C |
Stability |
<0.005 °C |
<0.005 °C |
Ambient Range |
0 °C to 40 °C, 20% to 70% RH |
0 °C to 40 °C, 20% to 70% RH |