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in stockReleased: 1991-09-09
UNE 55844:1991
SURFACE ACTIVE AGENTS. DETERMINATION OF BIODEGRADABILITY OF NON-IONIC SURFACTANTS USED IN DETERGENT FABRICATION.
Agentes de superficie. Determinación de la biodegradabilidad de agentes tensioactivos no-iónicos empleados en la fabricación de formulaciones detergentes.
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| Standard number: | UNE 55844:1991 |
| Pages: | 22 |
| Released: | 1991-09-09 |
| Status: | Standard |
DESCRIPTION
UNE 55844:1991
IT SPECIFIES A METHOD FOR THE DETERMINATION OF THE BIODEGRADABILITY DEGREE OF NON-IONIC SURFACTANTS USED IN DETERGENT FABRICATION. THE SAMPLE IS FIRST SUBJECTED TO A PRESUMPTIVE TEST BASED ON SHAKE CULTURE. WHEN NECCESARY, THE SAMPLE MAY BE SUBJECTED