YSI 2900 series, Руководство по эксплуатации и обслуживанию

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16. Appendix B – Concentration Unit Conversion
In the 2900 Series Configure menu, you have the option to assign units of concentration. There are default values set
based on calibration solutions offered by YSI. Below is a table of unit conversions for these calibration solutions and other
concentrations of interest.
Chemistry g/L
mg/L
(ppm) mg/dL
%
(w/v) mmol/L
mw
(g/mole)
Choline 0.18 175 18 0.018 1.68 (104)
Glucose (Dextrose) 2.50 2500 250 0.25 13.89 (180)
Ethanol 2.00 2000 200 0.20 43.48 (46)
Ethanol-HC 25.0 25000 2500 2.50 543.5 (46)
Galactose
6
2.50 2500 250 0.25 13.89 (180)
L-Glutamate 0.73 731 73 0.073 5.00 (146)
L-Glutamine 0.73 731 73 0.073 5.00 (146)
Glycerol 25.0 25000 2500 2.50 271.5 (92)
L-Lactate 0.45 450 45 0.045 5.00 (89)
Lactose 5.00 5000 500 0.50 14.62 (342)
Methanol 1.00 1000 100 0.10 31.25 (32)
Peroxide
6
0.60 600 60 0.06 17.65 (34)
Sucrose 5.00 5000 500 0.50 14.62 (342)
Xylose 20.0 20000 2000 2.00 133.3 (150)
Ammonium 0.50 500 50 0.05 27.8 (18)
Potassium 1.00 1000 100 0.10 25.6 (39.1)
If you are using a standard of a value not listed in the preceding table, refer to the example conversions below to help
calculate your unit of choice.
Example Conversions
Beginning with 2.50 g/L glucose, convert this to mg\L, then % and finally to mmol/L:
1. Multiply by unit conversion(s)
2. Cancel units common in “numerator” and “denominator”
3. Multiply numbers
? mg/L = 2.50 g/L
= (2.50 g/L)(1000 mg/g) = (2.50)(1000) mg/L = 2500 mg/L
? % (w/v) = 2.50 g/L
= (2.50 g/L)(0.1 L/dL) = (2.50)(0.1) g/dL = 0.250 g/dL
= 0.250 % (Note: g/dL is g/100ml or percent)
? mmol/L = 2.50 g/L
= (2.50 g/L)(1 mole/180 g)(1000 mmole/mole)
= (2.50)(1/180)(1000) mmole/L = 13.89 mmol/L
6
Denotes that YSI does not currently offer this standard value.