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H-B DURAC Single Channel, Switchable Electronic Timer with Certificate of Calibration

This single channel timer is switchable between 19 hours:59 minutes and 99 minutes:59 seconds, with three key operation for ease of use.Count direction up/down; last time set memoryAudible alarm; displays elapsed time after countdownMounting options: lay flat, flip-open stand, or magnetic backRequires one AAA battery (included); CE marked, RoHS compliantFeatures a Certificate of Calibration and individual serial number, tested against equipment traceable to NIST

H-B DURAC Brix Sugar Scale Plastic Hydrometers; Traceable to NIST

Made from optical quality polycarbonate, these plain form hydrometers are ideal where rough handling or contamination is a concern, available in two models measuring 0° to 35° or 15° to 50° Brix (% sucrose by weight).Durable and shatterproof; easy to read black scale on yellow back300 mm (12") long; lead free ballastIndividually serialized; temperature standardization: 20 °CMade in USA; hand inspected by our U.S.

H-B DURAC Specific Gravity ASTM Hydrometers; Traceable to NIST

Available in a variety of models measuring specific gravity of heavy and light liquids from 0.650 to 2.000, in accordance with ASTM E100 standards.Conform to the accuracy requirements of ASTM hydrometersCommonly used in food and beverage, chemical, pharmacology, transportation and refrigeration industriesLead free ballast and glass; individually serializedTemperature standardization: 60 °F/60 °FPackaged with a multi-language Statement of Accuracy indicating traceability to NISTNote: Store in a clean, dry, safe place away from extreme temperatures.

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