The 530 nm Single Analyte Meter (SAM) Verification Kit from CHEMetrics allows an analyst to quickly and routinely check the performance of five different CHEMetrics photometers, including chlorine (I-2001), dissolved oxygen (I-2002), chlorine dioxide (I-2005), ozone (DPD) (I-2019) and peracetic acid (I-2020). Appropriate for instrument verification in the lab or in the field, it is packaged in a compact, durable polypropylene carrying case, and includes a set of ampoules containing various dye solutions specific to the wavelength of the particular photometer. CHEMetrics determines the absorbance value of each dye ampoule in the kit using a spectrophotometer certified with optical standards traceable to NIST. The analyst measures the dye ampoules in the photometer and compares the results to values in the Certificate of Conformance supplied with each kit. 800/356-3072; www.chemetrics.com.