A tough all-purpose primer for use when extra masking or isolation of substrate is required, such as over oil-based (enamel) paints when changing to a water-based (acrylic) system, or for timber prone to tannin bleed. Excellent as a general purpose all-metal primer, particularly suitable for use over galvanised iron. This product contains 30g/L VOC. The APAS target level for this product is 450g/L. (APAS is the Australian Paint Approval Scheme).