Sherwood 420Cs Flame Photometer - Brochure

The M420Cs is Sherwood’s newest addition to the Flame Photometer product line. Evolved from the well-established M420, the M420Cs provides a precision (%CV) ≤ 0.5, now achievable with all new dual channel models: i.e. the M420 & M425. Unique to the M420Cs, is addition of a Caesium reference channel. This enables the analyst to work with Caesium or Lithium as an internal reference. The M420Cs’ additional internal reference option provides greater flexibility; operators have the ability to choose the internal reference element based on the sample matrix considerations or existing procedures developed for discontinued instrumentation such as the IL 943 Flame Photometer. A practical example where the Caesium option is beneficial is analysis of Lithium in clinical samples while still being able to benefit from the improved precision achieved by use of an internal reference.