Description Packaging 1 L in PVC-coated bottle 100, 4×100 mL in glass bottle 2 L in glass bottle 2.5 L in PVC-coated bottle 2.5 L in poly bottle 500 mL in PVC-coated bottle 500 mL in glass bottle 500 mL in poly bottle 6×2.5 L in PVC-coated bottle 6×2.5 L in poly bottle 6×500 mL in PVC-coated bottle 6×500 mL in glass bottle 4 L in PVC-coated bottle 6×500 mL in poly bottle Other Notes ACS specifications same as product 320501 4L and 4X4L are packaged in poly bottles SKU-Pack sizes with -PC are packaged in PVC coated glass bottles.