FAQ Frequently Asked Questions

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How to choose the appropriate sample holder

Applicable instrument: Spectro LFP qb

Sample holders can be exchanged quickly by releasing them with the switch on the transport arm and moving the sample holder to be ex-changed towards the operator:

When inserting a new holder, make sure it is inserted until a click noise indicates the final and correct fixing of the sample holder.


Measuring reflective samples
Reflective materials can be measured using the supplied white back-ing reflection sample holder C5H40.

This sample holder is made of a selected white material conforming to ISO 13655-2017.
Measurements made with this sample holder are also named “white backing measurements” as recommended by the ICC (International Color Consortium) for the creation of ICC profiles and as stated in ISO 13655.
If “black backing measurements” are requested, please fix a dark sheet (density > 1.5) on this sample holder.

Note: This sample holder can be used for samples up to 150 g of weight. For heavier samples, please use the optional sample holder for heavy materials.

The sample to be measured must be fixed inside the indicated corner marks using a tape.


Electrostatic reflection sample holder

For simpler fixing of the charts to be measured, the Electrostatic sample holder C5H10 is optionally available:

This sample holder attracts the material with electric charging.

Measuring transmissive samples
Transmissive materials must be measured using one of the following sample holders:
1) The supplied standard transmission sample holder (C5H50).

For measuring insert the sample between the two transparent sheets of the sample holder and position inside the corner marks.

2) The optional Frame transmission sample holder for M1 measurements (C5H30)

This sample holder allows frame mounting og the color charts and assures no UV-cut filtering occurs when measuring.


Measuring special materials
For measuring special reflective or transmissive materials there is a set of 2 special sample holders available (C5H20):

Measuring heavy reflective materials
When measuring heavy reflective materials, the optional sample holder for heavy materials must be used (C5H21).

It consists of a metallic holder with 2 magnets which are used to fix the sample. The anti-slip mat helps keep target from moving during measuring.
This sample holder can be used for samples up to 3 kg of weight. Fix the side guide and the sample holder on your instrument.

The target sample must be fixed with the two magnets and pushed towards the upper left corner of the sample holder.

Measuring thick transparent materials
When measuring thick transparent materials like glass or plastic plates use the sample holder C5H22. The recommended media thickness is up to 5mm. The thicker the material is, the larger must the patches be. For material of 5mm thickness the recommended patch size is 10mm.

The sample is fixed to the sample holder using a tape.

Measuring special transparent materials
When you measure transparent materials like textiles which you like to measure in transmissive mode use the sample holder C5H50.

For measuring insert the sample between the two transparent sheets of the sample holder and position inside the corner marks.

Measuring Textiles/ Fabrics
A special electrostatic textile sample holder with frame (order code C5H80) is optionally available for fixing textile materials.

If the material to be fixed is very thin, or elastic, then the chart might only be fixed distorted. In this case use the automatic target recognition option available with the “Textile edition” of the instrument in order for the software to detect correctly the center of the patches,

For very difficult to fix textiles, use the sticky mat sample holder (order code C5H82).

Note: Do never use this sample holder without chart inserted, as the measuring head will stick on the holder when touching its surface and this could cause damages to the device

Note: the surface of this sample holder can be cleaned after use by washing it under water. Please let it fully dry before next use.

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