Question
What are the benefits of viscosity testing?
Forum Responses
There are several reasons why you should check viscosity.
1. When you use the correct viscosity, you will have less solvent popping, runs and a more consistent wet film thickness from day to day production.
2. If you operate several shifts, it will allow spray equipment to work properly from shift to shift and finisher to finisher.
3. It will also allow the spray guns to work their best, as certain gun tips are for certain viscosity products.
Make sure you always check viscosity at the same temperature. Temperature has a big part to play with the viscosity. If possible, always use the same temperature as the manufacturer uses on the data pages. This way we all are talking "apples to apples".
Bob Niemeyer, forum technical advisor
Bob Niemeyer, forum technical advisor
Also, we used to order our material in 55 gallon drums that were supposed to be at spray viscosity. It helps to have a zahn cup to check and make sure the supplier hasn't changed something. Our manufacturer started sending higher viscosity material to get around VOC regulation in Southern Cal. If we weren't checking, we could have had problems.