Význam a použití

3.1 Spoilage of paint in containers is usually associated with the use of contaminated raw materials, voda (especially recycled washing water), containers, pipes and equipment in manufacturing plants. A simple method is needed to determine the presence or absence of microorganisms in plants that make paints and coatings. Such determination allows manufacturers to identify contamination points (tj., raw materials or problem management areas in the plant) to help address corruption.

Poznámka 1: Some contamination of plant areas is expected, as microorganisms are ubiquitous and in practice usually cannot be eliminated (this is what the preservatives in the tank should control). Excessive contamination or contamination of raw materials may exceed the capacity of the preservative. If your plant has excessive contamination, there are disinfection methods including steam, preservatives, bleach, atd. These should be discussed with your fungicide supplier and used with care. Recycling spoiled or contaminated products is often not feasible, so the importance of proper fungicide levels combined with good plant management practices is self-evident. Your biocide supplier can also help here.

3.2 This test method can be used by people without basic microbiological training, but some training in aseptic techniques is recommended.

Poznámka 2: The reliability of the results obtained from this test method depends greatly on the technique used. Incorrect techniques can result in sterile samples being contaminated, or worse, contaminated samples appearing sterile (vidět 5.1). It is recommended that you consult your biocide supplier, raw material supplier or independent testing laboratory to confirm suspicious results.

ASTM D5588-1997 Standard Test Method for Determination of Microbial Conditions in Paints, Paint Raw Materials, and Plant Areas

Krok 1: Rozsah

1.1 This test method includes procedures for determining the microbial status (contaminated or sterile) of raw materials used in paint production and the microbial status of paint and paint manufacturing areas.

1.2 Hodnoty vyjádřené v jednotkách SI se považují za standardní. Hodnoty uvedené v závorkách jsou pouze orientační.

1.3 Tato norma není určena k řešení všech bezpečnostních problémů, jestli nějaký, spojené s jeho užíváním. Je odpovědností uživatelů této normy zavést vhodné bezpečnostní a zdravotní postupy a určit použitelnost regulačních omezení před jejím použitím..

1.4 Tato mezinárodní norma je založena na mezinárodně uznávaných zásadách normalizace stanovených v “Rozhodnutí o zásadách pro vývoj mezinárodních norem, Pokyny a doporučení” vydal Výbor pro technické překážky obchodu (TBT) Světové obchodní organizace.