Evaluation of conformity specific migration (SML)/ NIAS- Screening/ Single substance analyses/ GC- MS- analysis Overall migration (OML), Sensory analysis, colour fastness, microbiology Expert opinions and assessments (e.g. damage analyses), custom tests Mechanical/ technological properties Material analysis optical tests permeation

Information about tests

Colorimetric measurement, colourimetry (L, a, b*)

Measurement of colors, e.g. for evaluation of color deviations, color changes, for comparative measurements, etc. on films, granulates or flakes, articles, pastes, liquids, or others. Possible parameters: Measuring area 3- 25.4 mm, light type D 65 or D 50, measuring geometry d8, observer 2° or 10°- depending on the task and the test standard to be fulfilled.

test method:	optical tests
Norms:	APR PET-S-02 (nur Colorimetrie) (2018-11) DIN 5033-1 (2017-10) DIN Fachbericht 49 (1995) DIN EN ISO 105-A05 (1997-07) DIN EN ISO 18314-1 (Dezember 2018) EPBP QT 507 (nur Colorimetrie) (2017-03) DIN 53236 (2018-02) DIN 5020 (September 2022)
Needed sample size:	liquids, pastes, granulates, flakes: min 100 ml, sheet materials: min 5 x DIN A 4

Standardprüfungen

Colour measurement on liquids, pastes, etc.
The method is used, for example, to evaluate the color perception of liquids, pastes and similar materials. One application is, for example, the evaluation of the discoloration of washing solutions from cleaning processes for PET recyclates (bleeding). Here, color measurements are used to document the effects of packaging design on PET recyclate, e.g. with regard to possible bleeding of printing inks from label materials into PET.
Norm: DIN 5033-1

Colour measurement on films, printings, etc.
The method is used, for example, to evaluate the matching of colours or colour changes. Here, the deviation from a defined standard, which is called Δ E or ΔL*,Δ a*,Δ b* for the three individual colour axes, is usually of interest.
Norm: DIN 5033-1

back to overview optical tests

Search examinations

Your contact person

Matthias Böhne

+49 441 94986-11

matthias.boehne@innoform.de

Examinations in this area