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ProCal

ProCal Primary Turbidity Standards for HF scientific Turbidimeters

  • Custom NTU values available
  • Greener - safe and non-toxic
  • Can be used with other manufacturer's instruments
  • Easy to use

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific ProCal

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA