Optical point SP-PSt8-NAU for oxygen sensor PreSens

Description

PreSens SP-PSt8-NAU and SP-PSt8-YAU optical points, when used with PreSens oximeters, allow accurate non-invasive oxygen measurements in the range from 0 to 10%, with a detection limit of 0.007%.

Due to their small size, these sensors are the most versatile and can be used in many applications for the measurement of dissolved and gaseous O2. For example, in the development of bioprocesses (monitoring oxygen in shake flasks), measurement of photosynthesis and cellular respiration of various organisms, bacteria, cell cultures, yeast or fungi.

Optical points are attached to the inner surface of any transparent or translucent container, then oxygen is measured from the outside - through the wall of the container.

SP-PSt8-NAU - not autoclavable.

SP-PSt8-YAU - autoclavable.

PreSens Optical Point Specifications

• Measurement range:
  Gaseous and dissolved O2: 0 - 10% O2, 0 - 100 hPa
  Dissolved O2: 0 - 4.5 mg / L, 0 - 140 μmol / L
• Detection limit:
  Gaseous and dissolved O2: 0.007% oxygen
  Dissolved O2: 3 ppb
• Permission:
  Gaseous and Dissolved O2:
  ± 0.002% O2 @ 0.008% O2
  ± 0.06% O2 @ 2.5% O2
  Dissolved O2:
  ± 0.7 ppb at 3 ppb
  ± 2.5 ppb at 1000 ppb
• Accuracy at + 20 ° C: ± 3 ppb or ± 3% rel.
• Temperature measuring range: 0 - 50 ° C
• Response time (t90):
  Gaseous and dissolved O2: Dissolved O2:
• Compatibility: aqueous solutions, ethanol, methanol
• Not sensitive to: pH 1 - 14, CO2, H2S, SO2, ionic forms
• Sensitivity to: organic solvents such as acetone, toluene, chloroform or methylene chloride, chlorine gas
• Sterilization: Ethylene oxide (EtO) (steam sterilization is also available for SP-PSt8-YAU)
• Purification: 3% H2O2, ethanol, soap solution (for SP-PSt8-YAU also available CIP, 2% NaOH, + 80 ° C, + 176 ° F)
• Calibration: two-point calibration in an oxygen-free environment (nitrogen, sodium sulfite) and in an environment saturated with air
• Shelf life: 60 months when stored in the dark at room temperature

Various optical point models are available for ordering, depending on the diameter (3, 5, 7, 10 mm) and material: PTFE, USP Class VI (YOP), food safe (CAF).

For the SP-PSt8-NAU, in addition to the materials listed above, optical points with a fast response time, not autoclavable (OIW) are available.