Queensland Bulls coach Stuart Law doesn’t expect experimental pink balls to adversely affect next week’s day-night Sheffield Shield matches.

Stuart Law believes the pink ball to be trialled in day-night Sheffield Shield matches will make for fairer, better contests than the yellow and orange ones he faced in the 1990s.

Queensland Bulls coach Law has defended the timing of next week’s trial when the penultimate Shield round will feature Kookaburra’s experimental pink ball.

With five teams still in the hunt for a berth in the final, critics are worried bowling teams will gain an unfair advantage in the day’s final session as the ball swings around more and may be harder to see.

Matches in Melbourne and Adelaide will run from 2pm to 9pm, while the Bulls-West Australia match starts 30 minutes earlier at the Gabba.

Black sightscreens will be used so batsmen can pick up the ball better under lights.

Players have reported from training that the pink ball blurs like a comet with a tail, while colour-blind Test opener Chris Rogers said he wouldn’t play with one again after struggling to see it in a floodlit game in Abu Dhabi.

Cricket Australia hope to see the experiment become a success as they are keen to stage day-night Test matches against less powerful cricketing nations to increase crowd numbers.

Law’s Bulls have been practising with the new ball in day-time sessions once a week over the past month and the former batsman has little concern, even though the twilight affects remain a mystery.

“It is the unknown and we don’t like change, humans in general, we fear change, but the basics of the game still stay the same,” he told AAP.

“The batsmen shouldn’t be too worried.

“It was a novelty way back in the `90s and batsmen still scored hundreds against an orange ball, bowlers took wickets and the game just moved on a bit quicker at times.

“It’s part of the (experimental) process and we’ve just got to get on with it.”

Law recalls scoring 150 against the Warriors at the WACA, while Dean Jones scored an unbeaten 324 against South Australia.

Back then, a yellow ball was trialled first before the orange was tried.

“After five overs the (yellow) ball went the same colour as the pitch, so that proved a little bit difficult to the batting side,” Law said.

“Then the orange ball had a big vapour trail when the lights took affect.

“It seemed to have a real bright, plastic-type coating whereas the pink ball seems to have the same characteristics as the white ball.”