pH is a measure of how acidic or alkaline a solution is. The diagram below shows what happens to an enzyme when denaturation occurs. Each enzyme has an optimum pH but it also has a working range ...

The Hach 2100Q portable turbidimeters offer unsurpassed ease of use and accuracy in turbidity measurement. Only Hach offers this unique combination of advanced features, such as assisted ...

WATERTOWN — Maybe it was a good thing that Watertown senior 285-pounder Micah Hach didn't have to work too hard to pick his 35th high school wrestling victory of the season on Thursday.

Watertown senior wrestler Micah Hach, a South Dakota State University recruit, improved to 35-0 on the season Thursday. Hach signed to play football and wrestle at SDSU and is sticking with his ...