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- What is the difference between the turbidity units NTU, FNU, FTU, and FAU? What is a JTU?
- What is the difference between free chlorine and total chlorine?
- I need modbus registers for my Hach instrumentation, where can I get them?
- What is the difference between a reagent blank and a sample blank?
- What is seed, and how is it used in the BOD dilution method?
- What is a pH calibration slope and what value should it be?
- Microbiology Guide: Most Probable Number (MPN) Method
- What is the difference between "to contain" and "to deliver" glassware?
- What do the units NH3-N mean?
- What is the difference between a colorimeter and a spectrophotometer?
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Most Recent Answers
- How often does Hach recommend calibrating the 2100 Portable Turb?
- If samples are not acid preserved as specified in the TNT880 method for s-TKN, what should be done?
- What is monochloramine and how is it used in water disinfection?
- Is there any guidance offered for meeting the QC criteria in Hach methods?
- Can a turbidity sample be diluted if it is outside the upper range of my turbidimeter?
- What can cause our new turbidimeter to read higher than our turbidimeter we are currently using?
- What is the IP rating on the Phipps & Bird jar tester?
- Does an unbalanced stirrer on a jar tester affect the results?
- What is the difference between a reagent blank and a sample blank?
- Can I use a sampling module like the Venturi or Vacuum Sampler with a BioTector B3500 analyzer?
