1. Shore Hardness Tester thlan dan tur .
Type A: Medium-hardness foamed silicone rubber (typical range 20-90 Shore A) atan a tha a, chu chu automotive sealing strips, electronic potting compounds ang chi a ni.O Type: Ultra-soft (0-100 shore oo), medical silicone pad leh shock-absorbing foams ang chi te. * Professional Basis * : ASTM D2240 atanga a lan dan chuan 6mm aia tam emaw, a aia tam emaw a thickness nei sample te chuan type A an hmang tur a ni a, thickness < 6mm emaw extremely soft materials nei material te chuan type OO an hmang tur a ni.
2. International standard tehkhin dan - -- .
ISO 48-4: Test hi constant temperature 23±2 degree-ah tih tur a ni a, stylus contact time hnuah second 15 hnuah chhiar tur a ni. ASTM D2240: temperature range zau zawk (±5℃) phal a ni a, mahse ambient temperature leh humidity te chu record a ngai a ni. * Data discrepancy * : Sample inang chiah chu ISO leh ASTM angin test a ni a, result deviation chu ±3 shore unit vel a ni (source: Polymer Testing Journal 2022 study).