Sargent-Welch

Mechanical Counter from Sargent-Welch Spectrophotometer

I like that the Clearcast 7000 uses a common filter that is easy to replace.

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Cuvette Holder With Cap from Sargent-Welch Spectrophotometer

The Oil Equipment Mfg 4171 model is a workhorse that has been tested in real-world conditions extensively.

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