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|  | 3824 | pH calibration buffer pack, 2 pints ea. of pH 4, 7, & 10 | $70.00
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|  | 5580 | Confidence solution for conductivity, ORP, & pH, 6 pints | $87.00
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|  | 135 | Pocket notebook, polydura cover, universal pattern (3" x 5") | $3.85
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|  | 653 | Waterproof spiral notebook, polydura cover, 32 sheets, field pattern (4 5/8" x 7") | $9.45
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|  | 550 | Environmental bound book, polyethylene cover, environmental pattern | $18.95
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|  | 37 | Black all-weather pen, chrome/plastic barrel | $8.95
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