HL Deb 29 February 2000 vol 610 c58WA
The Countess of Mar

asked Her Majesty's Government:

Whether any other chemicals are used as stablisers to prevent the development of TEPP and SULPHOTEPP in products containing diazinon as their active ingredient; and, if so, what they are. [HL1089]

Baroness Hayman

All diazinon-based sheep dips contain a stabiliser. The formulation of any authorised veterinary medicinal product is commercially sensitive and may not be revealed except with the agreement of the marketing authorisation holder. All veterinary medicinal products, as formulated, must satisfy statutory criteria of safety, quality and efficacy.