Identifying polyester in yarn stock and finished yarn (ready to be used for clothing manufacture) is important to yarn producers and garment makers because fabric dyes are specific for certain fabrics. For example, if a piece of material is made of a yarn presumed to be cotton but is actually a cotton/polyester blend, the material will have an uneven appearance after it is dyed because the polyester will not absorb the cotton dye. In this example, it is critical to identify the presence of polyester before manufacturing the garment. Similarly, yarn producers need to identify raw stock before production to insure fabric consistency.

How to Identify Polyester?

A quick and convenient method of identifying polyester is to illuminate the suspect yarn or cloth with a XEPU longwave UV Lamp. Polyester will emit shiny white fluorescence when illuminated by ultraviolet light and become easily visible. Identifying polyester using XEPU UV lamp is a non-destructive detection method, resulting in no contamination to the detected material.

Image below: white fluorescence of polyester observed using UV lamp

XEPU Recommended UV Lamps for Polyester Identification

Handheld Longwave UV Lamp XEPU-1318LF is a lightweight, easy-to-use, and economical UV lamp designed to provide quick identification of polyester in low light conditions. UV Lamp XEPU-1318LF is equipped with a 8 watt UV tube and a black filter which blocks visible light and improves inspection reliability. Designed for both handheld and stationary inspection, UV Lamp XEPU-1318LF is an easy and powerful inspection tool for polyester identification!

Image below: longwave UV Lamp XEPU-1318LF for polyester identification

Three-wavelength UV Lamp XEPU-1338LMS provides intense UV light of three wavelengths (365 nm, 302 nm, and 254 nm). Different materials may react differently to UV light. With all three wavelengths, XEPU-1338LMS is able to detect different materials and cover almost all of your detection needs.

Image below: Three-wavelength UV Lamp XEPU-1338LMS capable of detecting different materials

Portable LED UV Lamp XEPU-1605 is powered by a rechargeable battery and offers better portability. Equipped with five high-power LEDs, UV Lamp XEPU-1605 features intense longwave UV radiation, long lasting use, and excellent fluorescence detection.

Image below: LED UV Lamp XEPU-1605 with intense UV light for polyester identification