HACH SUPPORT
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Most Popular Answers
- Ammonia vs. Ammonium – what is the difference between these forms of nitrogen?
- What is the calculation for converting from mg/L to ppm?
- What is the purpose of dilution?
- If a reagent has an expiration date of 9/20 is that September 20th of the current year or September 2020?
- How is Standard Deviation and Relative Standard Deviation Calculated?
- How does salinity affect Dissolved Oxygen solubility?
- 5500sc Silica Analyser Basic User Manuals
- What is a standard solution?
- What are some common Hardness unit conversions?
- What is CBOD?
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Most Recent Answers
- What ion is being measured when testing for alkalinity?
- Is there a service manual for the jar testers?
- Does Hach service the Eclox Luminometer?
- What is the recommended service interval for Hach instruments?
- What does the "Next Service Due" message on a spectrophotometer mean?
- Why do dissolved oxygen membrane sensors have to be polarized for 12 hours before calibration?
- What is the best probe to measure DO (dissolved oxygen) in lotion?
- What accepted test methodology does the chemistry of the Dissolved Oxygen Test Kit, Model OX-2P follow?
- Is the Dissolved Oxygen Test Kit, Model OX-2P (catalog number 146900) compatible with seawater?
- The results of a dissolved oxygen test using AccuVac® ampules on the same sample are different, does this indicate bad reagents?