SG Request a Quote Email usinfo @ rxmarine.com DocumentsRequest MSDS / TDS Wall Wash Test Kit-63 Product code RXSOL-63-6307-001 SPECIFIC GRAVITY LPG APPARATUS ASTM 1657 DENSITY METER Request a Quote Email Us SPECIFIC GRAVITY LPG APPARATUS ASTM 1657 (DENSITY METER) Material : As per ASTM 1657 Application Use : For LPG testing Specific Gravity.