11
098-0003 Rev. B
4.0 MONITORING
Under AAMI TIR34 requirements, the below listed items need to be monitored on varying
intervals.
1. Ultra filters are to be monitored daily for a pressure drop. The pressure drop across
the filter that indicates the need for replacement is 15 PSI.
2.
Reverse osmosis systems should be monitored in accordance with the facility’s quality
management system, using continuous-reading monitors that measure product water
quality (total dissolved solids). These measurements can provide a measure of
equipment performance.
3. Cartridge filters are to be monitored daily for a pressure drop. The pressure drop
across the filter that indicates the need for replacement is 15 PSI.
4. Water storage tanks are to be monitored monthly for the three listed specifications:
a. Bacterial count
– Utility and critical of <10 cfu/mL
b. Tap, softened, deionized water of <200 cfu/mL ²
c. Endotoxin- Critical Water of <10 EU/mL²
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