A-A-50531B, Cloth, Poplin: Polyester and Cotton (Water Repellent)

Background
The Marine Corps Systems Command (MARCORSYSCOM) is preparing Draft A-A-50531B, which outlines specifications for a polyester and cotton, water repellent poplin cloth intended for military personnel wear.

The goal of this draft is to establish standards that promote adaptability in design and production methodologies while soliciting feedback from a broad vendor base.

Work Details
The contract involves the provision of cloth that meets the following specifications:
1. **Material Description**: A blend of 65±3% polyester and 35±3% cotton, spun into either single or 2-ply yarn for the warp direction and single yarn for the filling direction, with a plain weave and treated for water repellency.

2. **Color Requirements**: The finished cloth must meet specified colorfastness requirements and should not contain elementary sulfur compounds capable of oxidation to sulfuric acid. Visual shade matching must be performed under specific lighting conditions.

3. **Physical Requirements**: The cloth must conform to various physical tests including weight (5.3 to 6.8 ounces per square yard), breaking strength (minimum 185 pounds warp, 70 pounds filling), tearing strength, dimensional change after laundering, colorfastness ratings, air permeability, and hydrostatic pressure resistance.

4. **Toxicity Assessment**: The finished cloth must not present health hazards and should comply with EPA regulations regarding carcinogenic materials.

Period of Performance
This draft is dated July 1, 2026, but it has not been approved and is subject to modification.

Place of Performance
Quantico VA 22134 UNITED STATES

Bidder Requirements
Bidders must provide materials that have been safely used commercially or sufficient toxicity data demonstrating compatibility with prolonged direct skin contact. Additionally, the contractor must ensure that the finished product conforms to quality assurance standards defined by the technical data in the bid package.