Under cross examination by the prosecutor, Bramley insisted he had never cooked up 2.35kg of methamphetamine in his life.
Bramley said the rate of methamphetamine production during that cook up was a gram a minute, and on that basis the amount of P the Crown claimed he was capable of producing on March 2-3, 2010 was "impossible", it would have taken almost 40 hours.
On March 4, 2010 he was in Auckland with $115,000 trying to buy some more Contac NT to be used for a cook up, he said.
Bramley insisted a text message reference to 2350 he and Duncan had discussed in the days leading up to March 7 was the quantity of hypophosphorous acid he needed to complete the cooking process that day, not the amount of P he had produced.
Former policeman and real estate agent Nigel David Walker, 47, who is also on trial, has denied conspiring with Duncan to money launder some of Duncan's drug dealing proceeds.
The trial continues today.