GB/T 27597-2011Dyestuffs - Determination of diffusibility (English PDF)

1 Scope

This standard specifies the method for determination of dye diffusion properties.

This standard applies to disperse dyes, vat dye diffusion assay performance.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 1914-2007 Chemical analysis filter paper

General conditions GB/T 2374-2007 Determination of dyes provisions

GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)

Principle 3

When the bleeding dye suspension formed a circle on the filter paper can be qualitatively determined according to dye diffusion properties of dye deposition infiltration center of the ring

The pros and cons. With the "dye diffusion performance rating card" in the loop filter permeability contrast dye diffusion to evaluate the performance rating.

4 instruments and equipment

Instruments and equipment shall comply with the relevant provisions of GB/T 2374-2007 in Chapter 4.

a) balance. a sense of not more than 0.001g.

b) Stirrer. magnetic stirrer, speed 500r/min ~ 600r/min, stirring rod specifications phi6mm × 40mm.

c) the surface of the dish. diameter 100mm.

d) scale straw. 0.2mL ~ 1.0mL.

5 Reagents and materials

Reagents and materials shall comply with the relevant provisions of GB/T 2374-2007 in Chapter 3; test water should comply with GB/T 6682-2008

The three water requirements.

a) filter paper. meet GB/T 1914-2007 rapid qualitative filter paper (101) of the filtration rate requirements.

Step 6 Analysis