Nelson breweries want a bottle washing plant in the region and a standardised bottle to be produced in New Zealand.
Mr Duncan said Founders produced about 200 bottles a day, and 30 percent of them were returned to the brewery. Each bottle had a 5c refund.
He said hand-washing the bottles was too time-consuming.
Bays Brewery owner Peter McGrath did not back his fellow Nelson brewers. He questioned the quality of reused bottles, saying, “You don’t know if there’s been paint thinner in them”.
Mr McGrath said plastic rigger bottles were the “ultimate recycling vessel”. Some of his customers had reused their riggers 100 times.