A concentrated, aldehyde-free, broad spectrum disinfectant. Zeta 7 is specially formulated for the rapid, high-level disinfection of impressions in silicone, alginate, polyether and polysulphur. It does not effect dimensional stability and is fully compatible with plasters. Either use 1% solution immediately after taking the impression and rinse under the tap for 30 seconds or immerse the impression in a 1% solution of Zeta 7 for 10 minutes (adding 10ml of Zeta 7 for each litre of water being used), then remove the impression from the bath and rinse thoroughly. 1ltr of Zeta 7 solution = 100ltrs of disinfectant solution. 100g of Zeta 7 contains 7.7g of dimethyl-didecyl-ammonium chloride and 19g of phenoxyethanol. N.B. It is suggested that the solution is replaced frequently, especially in the presence of high levels of organic contaminants (i.e. blood and saliva).