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pH-B-2 Operator’s Manual – OPTI CCA-TS

pH (Dry Sensor) ANALYTES

Standard Reference Cassette (SRC) Limit Values

LOW NORMAL HIGH Units

7.100 ± 0.02 7.400 ± 0.02 7.600 ± 0.02 pH units

Interferences

Tonometered whole blood samples were spiked with a number of endogenous and exogenous chemicals

and tested for interference following the CLSI guideline EP7-A2

Chemical Interferent

Concentration

pH Level Interference

Acetaminophen 1.66 mM

7.170 NO

7.520 NO

Acetylsalicylic acid 3.33 mM

7.170 NO

7.520 NO

Ascorbic acid 0.23 mM

7.170 NO

7.520 NO

B-Hydroxybutyric acid 16.03 mM

7.170 NO

7.520 NO

Bilirubin 0.26 mM

7.170 NO

7.520 NO

Cardiogreen 0.0065 mM

7.170 NO

7.520 NO

Cystein 6.41 mM

7.170 NO

7.520 NO

Ethanol 86.8 mM

7.170 NO

7.520 NO

Evans blue 0.0104 mM

7.170 0.140

7.520 NO

Glycolic acid 10 mM

7.170 NO

7.520 NO

Halothane 0.759 mM

7.170 NO

7.520 NO

Ibuprofen 2.43 mM

7.170 NO

7.520 NO

Intralipid 1%

7.170 NO

7.520 NO

Methylene Blue 0.125 mM

7.170 NO

7.520 0.033

Sodium Chloride 20 mM

7.170 NO

7.520 NO

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