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Surface Indicators for Colorimetric Screening of Contaminants

Orderable Items SKC is Now Your Exclusive Source for CLI Surface and Dermal Assessment and Control Tools

On July 15, 2019, SKC Inc. acquired Colormetric Laboratories, Inc. (CLI).
SKC is excited to add CLI products to our highly respected, longstanding sampling solutions that help you maintain the health and safety of workers. SKC looks forward to continuing to provide the same great CLI products with excellent customer and technical support.

Swype Indicators indicate the presence of aromatic amines, aromatic isocyanates, aliphatic isocyanates, hydrazine, and acids/bases

  • Suitable for OSHA PPE Standard

  • Fast, easy results in 3 minutes

  • Convenient and safe
  • Inexpensive – no instruments or analysis required

  • Available for a variety of chemicals with ACGIH® skin notations

  • Ideal for dermal exposure reduction programs

Chemical contamination on workplace surfaces can result in significant skin exposure. Identification of areas and tasks for risk of dermal exposure is a critical element in a hazard assessment as required by OSHA’s PPE standard. SWYPEs are a simple and sensitive technique to identify contaminated work sites where protective gloves and clothing must be worn. The use of colorimetric SWYPE systems compliment the use of urine testing in a worker education and training program for controlling employee exposure.

A common sense approach is the key to the successful use of the SWYPE detection systems for reducing workplace exposures. The first step is to observe employee work practices. Tools, machinery controls, safety glasses or pencils that are handled with contaminated gloves and may later be touched by bare skin, represent potential exposures. Procedures for the handing of drums should be checked to ensure that drum surfaces do not become contaminated.

Pump seals and hose connectors can be checked for leaks with Surface SWYPEs . Surface SWYPEs can also be used to determine that urethane parts are completely cured before being handled with bare hands. Skin contact with uncured materials or surfaces in contact with uncured materials may result in worker exposures.

Gloves should be worn when using the Surface SWYPE detectors. First, lightly spray the area to be tested with Developing Solution. Wait approximately 30 seconds and then wipe with a Surface SWYPE pad. Allow 2 – 3 minutes for the color change reaction to occur. Do not reuse the Surface SWYPE after activation. The sensitivity of the Surface SWYPE is 3-5 µg for aromatic amines and isocyanates.


Surface SWYPEs are available for: 

  • Aromatic amines
  • Aromatic isocyanates
  • Aliphatic isocyanates
  • Aliphatic Amines
  • Acid/Base
  • Phenols


Colorimetric SWYPE pads are useful tools for identifying unpolymerized aliphatic isocyanates on a variety of surfaces. This technique has been used in autobody shops to determine the presence of hexamethylene diisocyanate and other aliphatic isocyanates that are important constituents of many automotive coatings. SWYPEs have the advantage of being relatively inexpensive, rapid, and portable. The color change elicited by aliphatic isocyanates (from yellow to red) provides a visual indication of the extent of surface contamination.




SWYPE indicators Flysheet

Operating Instructions

37534 - Surface SWYPES Aromatic Amines Cat. No. 769-1021

37535 - Surface SWYPES Aromatic Isocyanates Cat. No. 769-1022

37536 - Surface SWYPES Aliphatic Isocyanates Cat. No. 769-1023

37537 - Surface SWYPES Aliphatic Amines Cat. No. 769-1025

37538 - Surface SWYPES Acid Base Cat. No. 769-1026

37539 - Surface SWYPES Phenols Cat. No. 769-1027



A Rational Approach to Skin Decontamination: Primer on Dermal Exposure

Fundamentals of Percutaneous Chemical Absorption and Decontamination



Assessing Isocyanate Skin and Surface Contamination in Car Painters using SWYPE-RGB Analysis




CLI by SKC Products SDS List


Cat. No.
769-1001 Aromatic Amine Cleaning/Developing Solution
769-1001 Aromatic and Aliphatic Isocyanate Developing Solution
769-1001 DECONtamination Solution for Aromatic Amine
769-1001 D-TAM Skin Cleanser
769-1002 Aromatic and Aliphatic Isocyanate Developing Solution
769-1002 D-TAM Skin Cleanser
769-1002 Isocyanate DECONtamination Solution
769-1003 D-TAM Skin Cleanser
769-1003 Isocyanate DECONtamination Solution
769-1006 Acid/Base Developing Solution
769-1006 Aliphatic Amines Developing Solution
769-1007 D-TAM Skin Cleanser
769-1007 Phenol Developing Solution
769-2002 Aromatic and Aliphatic Isocyanate Developing Solution
769-2003 Aromatic and Aliphatic Isocyanate Developing Solution

Cat. No.

Aromatic Amine Cleaning/Developing Solution


DECONtamination Solution for Aromatic Amine


Isocyanate DECONtamination Solution

769-1061 Aromatic Amine Cleaning/Developing Solution
769-1062 Aromatic and Aliphatic Isocyanate Developing Solution
769-1063 Aromatic and Aliphatic Isocyanate Developing Solution
769-1065 Aliphatic Amines Developing Solution
769-1066 Acid/Base Developing Solution
769-1067 Phenol Developing Solution
769-1071 DECONtamination Solution for Aromatic Amine
769-1072 Isocyanate DECONtamination Solution
769-1073 Isocyanate DECONtamination Solution
769-2001 Aromatic Amine Cleaning/Developing Solution
769-2001 DECONtamination Solution for Aromatic Amine
769-2002 Isocyanate DECONtamination Solution

Isocyanate DECONtamination Solution

769-5001 D-TAM Skin Cleanser

D-TAM Skin Cleanser

769-5021 D-TAM Gold Skin Cleanser



D-TAM™ Selection Chart