What is the recommended calibration procedure for Hach LDO?
When calibrating Hach LDO, it is very important that the Temperature sensor and the LDO sensor cap have equilibrated in the same environment. This can be accomplished in any of the three calibration procedures (air saturated water, water saturated air, and known standard calibration), but Hach Environmental recommends the air saturated water procedure. Our tests have shown this procedure to be the most consistent and replicable. The air saturated water calibration can be accomplished without the use of expensive and clumsy pump mechanisms. Instead, please refer to our instruction sheets for a full description of the method, which utilizes a 2-liter plastic bottle, (e.g., an empty soda bottle) and our standard calibration cup.
