Lab Supplies Showing the single result Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low Sort by editor review Added to wishlistRemoved from wishlist 0 Gastec 4LL Detector Tube, Detects for Hydrogen Sulfide, 0.25 to 120 ppm Measuring Range, 0.5″ H, 3″ W, 6″ L, 1 fl. oz, Glass ₱5,852.00 Buy Now +