METER AQUALAB TDL User Manual

AquaLab TDL 15 APPENDIX A
Table 4: Water Activity of Selected Salt Solutions
Saturated Solution a
w
at 20
◦
C a
w
at 25
◦
C
Lithium Chloride 0.113 ±0.003 0.113 ±0.003
Magnesium Chloride 0.331 ±0.002 0.328 ±0.002
Potassium Carbonate 0.432 ±0.003 0.432 ±0.004
Magnesium Nitrate 0.544 ±0.002 0.529 ±0.002
Sodium Chloride 0.755 ±0.001 0.753 ±0.001
Potassium Chloride 0.851 ±0.003 0.843 ±0.003
Potassium Sulfate 0.976 ±0.005 0.973 ±0.005
Note: Table 4 adapted from Greenspan (1977). Rounded to
nearest thousandth.
4. Saturated salt solutions are very temperature-sensitive and their
values are not as accurate as the verification standards offered
by METER.
91

METER AQUALAB TDL Specifications

General

Brand	METER
Model	AQUALAB TDL
Category	Measuring Instruments
Language	English