Chemical Ceramics Corporation

Underwriters Laboratories Inc.®
June 5,2001
Chemical Ceramics Corp. Mr. Vance Stayner
619 Stayner Rd. Sugar Grove. IL 60554

Our Reference: R20640 / 01 NK22591

Dear Mr. Stayner.

This is a Report summarizing the results of a test conducted under a preliminary investigation identified as Assignment No. 01 NK22591.

METHOD:

The test was conducted in accordance with UL Standard 723 Test for Surface Burning Characteristics of Building Materials" (ASTM E84).

The test determines the Surface Burning Characteristics of the test material, specifically the flame spread and smoke developed indices when exposed to fire.
The maximum distance the flame spreads along the length of the sample from the of the ignition time is determined by observation. The flame Spread Index (FSI) of the material is determined by rounding the calculated Flame Spread (CFS) as described in UL 723. The CFS is derived by ploting the progression of the flame front on a time-distance scale, ignoring any flame front recession, and using one of the calculation methods as described below:

A. CFS= 0.515 At when At is less than or equal to 97.5 minute-foot.
B. CFS = 4900/(195-At) when At, is greater than 97.5 minute-foot.

Where At = total area under the time distance curve expressed in minute-foot.

The Smoke Developed Index (SDI) is determined by rounding the Calculated Smoke Developed (CSD) as described in UL723. The CSD is determined by the output of a photoelectric circuit operating across the furnace flue pipe. A curve is developed by plotting values of light absorption (decrease in cell output) against time. The CSD is derived by expressing the net area under the curve for this material as the percentage of the area under the curve for untreated red oak.

The CSD is expressed as:

CSD=(Am / Aro) x 100
Where:
CSD = Calculated Smoke Developed.
Am = The area under the curve for the test material.
Aro = The area under the curve for untreated red oak.

SAMPLES:

The samples utilized in this investigation were neither prepared nor selected by a Laboratories' representative such that no verification of composition can be provided.

RESULTS:

The results as tabulated below are considered applicable only to the specific samples tested.

Test No.	Description	CSD Calculatedd	FSI Flame Spread	CSD Calculated	SDI Smoke Developed Index
		Flame Spread		Smoke Developed

1	Chemical ceramic	0	0	0	0
	coating applied to
	inorganic reinforced cement board

The Classification Marking of Underwriters Laboratories Inc. on the product is the only method provided by Underwriters Laboratories Inc. to identify products which have been produced under its Classification and Follow up Service. No use of a Classification Marking has been authorized as a result of this investigation. Since the anticipated work has been completed, we have instructed our Accounting Department to terminate the investigation and invoice you for the charges incurred to date.

Should you have any questions, please contact the undersigned.