Can you clarify why the Hach kit directions call for one measuring tube for measuring D.O. and the WAV instructions call for two?
Two measuring tubes allow you to determine D.O. to the nearest 0.5 mg/L instead of 1 mg/L – so WAV’s methods provide a more accurate measure. The dissolved oxygen content of the water in mg/L is the total number of drops of titrant used to get to the endpoint divided by two if two measuring tubes of prepared sample were used. If only one measuring tube of prepared sample was used, the dissolved oxygen content is equal to the number of drops of titrant. Example: If you used two tubes of sample, you need to divide by two (13 drops divided by two tubes = 6.5 mg/L). If you only used one tube of sample, it’s the actual number of drops of titrant used (6 drops with one tube = 6 mg/L).
Related Questions
- Can you clarify why the Hach kit directions call for one measuring tube for measuring D.O. and the WAV instructions call for two?
- Is there a minimum tube length required to install either the light kit or bathroom ventilation Kit?
- How are professional tube paints different from the paintbox paints in the kit?
