The Elcometer 3238 Long Edge Wet Film Combs, these stainless-steel combs are wire eroded to provide an accuracy ±5% of marked value or ±3μm, whichever is greater, and are supplied with either Metric or Imperial measurements.

Each wet film comb has 24 measurement stages (teeth) providing a more accurate wet film thickness value.

Wet Film Comb Technique

Wet film combs have teeth of various lengths on their sides. The comb is dipped into the wet film and then removed. The wet film thickness lies between biggest value wet tooth and smallest value dry tooth values.

If the volume to solids ratio of the coating is known, then the wet film thickness can be used to predict the dry film measurement. As a rule of thumb dry film thickness will be 50% of wet film thickness. Elcometer offers a wide selection of wet film cobs to suit various applications.

The Elcometer 3238 Long Edge Wet Film Combs can be used in accordance with:

• ASTM D 4414-A
• AS/NZS 1580.107.3
• BS 3900-C5-7B*
• ISO 2808-1A
• ISO 2808-7B*
• JIS K 5600-1-7
• NF T30-125
• US NAVY PPI 63101-000
• US NAVY NSI 009-32

* Standards not in bold have been superseded but are still recognised in some industries.

 

Elcometer 3238 Long Edge Wet Film Combs – Specifications

Part Number	Range	Steps	Certificate
K0003238M201	5 – 120µm	5µm	ο
K0003238M202	25 – 600µm	25µm	ο
K0003238M203	50 – 1200µm	50µm	ο
K0003238M204	Set of 3 Wet Film Combs – Metric*		ο
Accuracy	±5% of marked value or 3μm whichever is the greater
Dimensions	60 x 30 x 2mm
Weight	27g per comb

ο Optional Certificate Available
* Set comprises of one of each scale 1, 2 and 3.

Packing List

• Elcometer 3238 Long Edge Wet Film Combs
• Storage Case
• Operating Instructions

Elcometer 3238 Long Edge Wet Film Combs – Data Sheet

Elcometer 3238 Long Edge Wet Film Combs Data Sheet

Elcometer 3238 Long Edge Wet Film Combs – Standards

The Elcometer 3238 Long Edge Wet Film Combs can be used in accordance with:

• ASTM D 4414-A
• AS/NZS 1580.107.3
• BS 3900-C5-7B*
• ISO 2808-1A
• ISO 2808-7B*
• JIS K 5600-1-7
• NF T30-125
• US NAVY PPI 63101-000
• US NAVY NSI 009-32

* Standards not in bold have been superseded but are still recognised in some industries.

Elcometer 3238 Long Edge Wet Film Combs – Instruction Manual

Elcometer 3238 Long Edge Wet Film Combs – Instruction Manual

Elcometer 3238 Long Edge Wet Film Combs – Video

This is how to measure wet film thickness using a wet film thickness gauge, also known as a wet film comb.

Wet film combs measure wet film thickness, and are available in a variety of materials including stainless steel, aluminium and plastic, with various measurement scales ranging from 20µm to 3000µm.

How to measure wet film thickness using a wet film comb: place a comb perpendicular to and touching the substrate. Hold the comb in position and wait a few seconds until the teeth are wet. Remove the comb from the film. The wet film thickness lies between the biggest value ‘coated’ or ‘wet’ tooth and the smallest value ‘uncoated’ or ‘dry’ tooth.

Elcometer offer a wide range of wet film combs to measure wet film thickness.