This technical note explores the sources of error in gravimetric measurements used for aerosol photometer calibration, emphasizing the impact of discrepancies in ...

This technical note discusses the rationale for using two-point calibration and multi-point verification in the calibration of aerosol photometers. It explains the theoretical basis for the linear ...

Since 2008, over 700 high school chemistry teachers received ACS-Hach High School Chemistry Classroom Grants. Teachers can request up to $1,800 for their ideas. Increase your chances for a proposal ...

The Hach DR 2700 Spectrophotometer can be used for more than 130 analytical methods. All of the chemistries and supplies needed for these tests are available from Hach. The spectrophotometer can ...

With UV and Visible Spectrum capabilities, over 250 pre-programmed methods including the most common testing methods used, guided procedures, and integrated quality assurance software, the DR 6000 ...

A GUI can be used to control the hardware, stimuli and variables needed for both method of constant (MOC) and more complex behavioural tasks that use the state machine. GUI supports protocol files ...