TM 10-6630-222-12&P
OPERATOR AND UNIT MAINTENANCE MANUAL
(INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)
FOR WATER QUALITY ANALYSIS SET: PURIFICATION (WQAS-P)
OPERATION UNDER USUAL CONDITIONS
PRINCIPLES OF OPERATION
CHEMICAL AGENTS: M272 WATER TESTING KIT
Water samples are taken and test chemicals added to cause a change in color within test tubes and or a chemical coated
ticket. The color change is compared to a reference standard to determine hazardous levels of Lewisite, Nerve, Cyanide,and
Mustard agents. (See TM 3-6665-319-10.)
ULTRAMETER
A.
Measuring Conductivity/Total Dissolved Solids (TDS)
1.
Rinse cell cup 3 times with sample to be measured. (This conditions the temperature
compensation network and prepares the cell).
2.
Refill cell cup with sample.
3.
Press <COND> or <TDS>.
4.
Take reading. A display of [----] indicates an over-range condition.
B.
Measuring Resistivity
Resistivity is for low conductivity solutions. In a cell cup the value may drift from trace contaminants or absorption from
atmospheric gasses, so measuring a flowing sample is recommended.
1.
Make sure pH protective cap is secure to avoid contamination.
Hold instrument at 30 angle (cup sloping downward).
2.
3.
Let sample flow continuously into conductivity cell with no aeration.
4.
Press <RES> key, use best reading.
NOTE: If reading is lower than 10 kilo-ohms display will be dashes: [----]. Use Conductivity
C.
Measuring pH
1.
Remove protective cap by squeezing its sides and pulling up.
2.
Rinse sensor well 3 times with sample to be measured. Shake out each sample to remove any
residual liquid.
3.
Refill sensor well with sample.
4.
Press <pH>.
5.
Take reading.
6.
IMPORTANT: After use, fill pH/ORP sensor well with storage solution, a strong KCl solution
and replace protective cap. Do not allow pH/ORP sensor to dry out.
TURBIDITY METER
With the Turbidity Meter, turbidity measurements can be performed with high precision in the field as well as in the
laboratory. the turbidity meter is a hand-held, microprocessor-based, battery operated instrument used to determine the
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