Specimen slide for occult blood testing

• US 4,382,064 A
• Filed: 02/11/1982
• Issued: 05/03/1983
• Est. Priority Date: 01/29/1981
• Status: Expired due to Term

• Current Assignee: Smith Kline Instruments Incorporated
• Original Assignee: Smith Kline Instruments Incorporated
• Inventors: Lawrence, Paul J., Townsley, Charles W., Detweiler, Michael B.
• Primary Examiner(s): Turk, Arnold
• Application Number:
  US06/348,112
• Time in Patent Office: 446 Days
• Field of Search: 23/230 B, 23/931, 23/932, 23/913, 422/55, 422/56, 422/57, 422/58, 436/66, 436/904
• US Class Current: 422/421
• CPC Class Codes: G01N 33/726 Devices

Abstract

Specimen test slides for occult blood having a receiving sheet between a front panel and a rear panel with openings in the front and rear panels and pivotal covers coated with 2,6-di-tert-butyl-p-cresol to cover said openings.

Claims

1. In a specimen test slide for occult blood having a front panel, a rear panel, said front panel having a plurality of openings, a specimen receiving sheet carrying a guaiac test reagent between the front and rear panels, pivotal covers in said front and rear panels opposite said openings, the improvement comprising:

said pivotal covers being coated with a composition containing 2,6-di-tert-butyl-p-cresol.

2. The slide of claim 1 wherein the inside cover of the slide is coated.

3. The slide of claim 2 wherein the composition is a varnish solution or suspension.

4. The slide of claim 3 wherein the 2,6-di-tert-butyl-p-cresol is present from about 2 to about 3 percent by weight in the composition.