All posts by Analite

Turbidity Calibration Standards

Turbidity Calibration Standards Evaluated from a Different Perspective Formazin was established as the first calibration standard for turbidimeters in the 1950’s. Machine performance and USA Environmental Protection Agency (EPA) approval for turbidimeters was structured around formazin as the calibration standard. The EPA method 180.1 also outlined design parameters for turbidimeters used for testing surface source … Continue reading Turbidity Calibration Standards

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Conversion of Nephelometric Turbidity Units

Conversion Relationship between Nephelometric Turbidity Units (NTU) into mg/l for Alberta Transportations’ Turbidity specification Conversion of Nephelometric Turbidity Units (NTU) into mg/l for Alberta Transportations turbidity specification is required since NTU is used as a surrogate for Total Suspended Solids (TSS) because it can be measured immediately in the field. NTU can then be converted … Continue reading Conversion of Nephelometric Turbidity Units

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ANALITE NEP-5000 Biofouling prevention

ANALITE NEP-5000 Biofouling prevention 1. Copper / Nickel composite body with previous version shroud design is a very effective measure to combat bio-fouling. 2. New Shroud design in solid copper with standard Delrin body helps a bit, but still some wiper buildup.     3. UV irradiance is very effective but has high current demand … Continue reading ANALITE NEP-5000 Biofouling prevention

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ISO7027 Probe installation optical clearance

Analite Probe Pipe Installation Application Note ANALITE ISO7027 (90°) probe installation optical clearance       ANALITE ISO7027 90° Probe Pipe Installation Arrangements In all cases, the pipe must be completely filled with water without bubbles or foam. The flow rate and pipe geometry should be such that cavitation will not occur on the probe … Continue reading ISO7027 Probe installation optical clearance

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