Absorbent Pad: Essential Leakproof Layer for UN 3373 Specimen Transport

In the medical packaging industry, absorbent pads are a mandatory component for the safe and compliant transport of biological specimens. Used primarily as a liquid locking layer inside 95kPa certified specimen bags, these pads act as a critical safety barrier when placed between the primary receptacle and secondary packaging to prevent leakage of infectious substances in transit.

Absorbent pads come in various sizes and absorption capacities to meet the requirements of UN3373 and P650 packing instructions. Common specifications include pads capable of absorbing 50ml of liquid, medium sized sheets that can hold up to 350ml, and large format pads with absorption capacity of 400ml or more. For high volume applications, multiple sheets can be added to any packaging to ensure complete containment in the event of catastrophic leakage. The absorbent materials are lint free and remain intact even when fully saturated for easy removal after use.

Material Innovation and Compliance

Most medical grade absorbent pads are manufactured from highly porous non woven materials including cellulose wood pulp, super absorbent polymers SAPs, and composite blends. Cellulose based pads are biodegradable and highly effective at absorbing liquids, making them increasingly popular for eco conscious packaging solutions. SAPs are synthetic materials capable of absorbing liquids many times their own weight, ideal for medical and industrial applications. Some pads feature leakproof adhesive closures, puncture resistance, and printed tracking information. Advanced designs include zeolite based composite pads with high volume blood absorption exceeding 500ml at absorption rates of 55 to 85ml per minute.

Manufacturer Support

As a professional manufacturer and supplier, we offer OEM biological specimen transport bags with compatible absorbent pads for diagnostic and clinical sample handling. Our absorbent pocket sleeves are designed for secured transportation of medical specimens and UN3373 biohazard substances as per United Nations regulations PI650. We also supply cold chain biological specimen transport bags with integrated absorbent materials for temperature sensitive shipments.