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formazin

1 substantive

Terminological databases

Engineering, Manufacturing and Construction

Metroloogia terminibaas

ID 1199593 Last modified 16.10.2026
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Metroloogia terminibaas

ID 1199592 Last modified 16.10.2026
View dataset
View dataset
Domain metrologyunits of measurementmeasuring instruments
formazine preferred
  • heterotsükliline polümeer, mis on saadud heksametüleentetramiini ja hüdrasiinsulfaadi reageerimisel
  • heterocyclic polymer produced by reaction of hexamethylenetetramine with hydrazine sulfate
formasiin
Usage examples
  • Kuna formasiin on stabiilne sünteetiline materjal, mille osakeste mõõtmed on ühtlased, kasutatakse seda tavaliselt etalonainena turbidimõõturite kalibreerimiseks. Formasiini kasutamise pakkusid esmakordselt välja Kingsbury jt (1926) uriini albumiini hägususe mõõtmiseks ja mõõtühikut nimetatakse formasiini hägususe ühikuks (FTU). 1,25 mg/l hüdrasiinsulfaadi ja 12,5 mg/l heksametüleentetramiini suspensioonil vees on hägusus üks FTU.
formazine preferred
Usage examples
  • Because formazine is a stable synthetic material with uniform particle size it is commonly used as a standard to calibrate turbidimeters. Formazin use was first proposed by Kingsbury et al. (1926) for the turbidity measurements of albumin in urine. The unit is called formazin turbidity unit (FTU). A suspension of 1,25 mg/L hydrazine sulfate and 12,5 mg/L hexamethylenetetramine in water has a turbidity of one FTU.
formazin

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