ST108 Sample Collection Types and Procedure Overview
The sampling procedures below are provided as a summary for reference and are not exhaustive. You are advised to contact Legionella Control Systems for more comprehensive and detailed sampling procedures related to the AAMI ST108 standard.
Contact Legionella Control Systems with any questions about AAMI sample procedures, AAMI ST108 testing and AAMI ST108 risk assessments.
Below are groupings of ST108 test types, the collection device for each, and a simple description of the sample collection procedure. Also see AAMI ST108 Microbiological Quality Sampling Procedures for additional notes.
Heterotrophic Plate Count (HPC)
Collection Device: Sodium Thiosulfate Treated 120 ml BT
Summary of Procedure: HPC collected in 120 ml sealed and treated vessel. Return standard overnight on ice. Samples must be analyzed within 48 hrs. of collection.
Endotoxins
Collection Device: Sterile/Pyrogen Free Tube
Summary of Procedure: Endotoxin samples collected in 15 ml pyrogen free tube
pH, Conductivity, Chloride, Sulfate , Nitrate , Phosphate, Turbidity, Color
Collection Device: 125 ml plastic container
Summary of Procedure: Let water run for two minutes before collecting to ensure representative sample.
Total Alkalinity
Collection Device: 250 ml plastic container, no headspace
Summary of Procedure: Fill 250ml bottle completely to rim with no headspace to prevent CO2 interference.
Iron, Copper, Manganese, Aluminum, Zinc, Silicate, Total Hardness
Collection Device: 125 ml plastic container
Summary of Procedure: Let water run for one minute before collecting to ensure representative sample
Total Organic Carbon
Collection Device: 40 ml amber glass container
Summary of Procedure: Completely fill bottle. Ship in wrapping to prevent glass breakage.
Contact Legionella Control Systems at 888-416-8626 for more comprehensive and detailed sampling procedures related to the AAMI ST108 standard.
