The sample the Jeff kindly sent me totally sold me this product. I've been a dental technician for 34 years and have experimented with all makes of cold mould seal. This product is superb. You can apply it easily to warm flasks and it flows beautifully. There is hardly any visible film but the dentures come out very clean and just need a rinse before trimming and polishing. I'm delighted to rate this product a justifiable '5' for it's value and performance.