Substrate Integrity & GSM Measurement
We physically unroll and test samples from every manufacturing batch. Using digital micrometer gauges and precision scale balances, we verify paper basis weight (ranging from ultra-thin 35 gsm Japanese Kozo to 52 gsm reinforced wood-pulp). Rolls are evaluated for edge-tear resistance and longitudinal tensile stability so that consumer tearing remains crisp, straight, and effortless.