Dip or drip?
For acclimation, I just replace purchase or shipment water with display water. I remove about a 1/4 of the solution and add display water, wait 10 minutes and rinse and repeat. Match temp and SG.
For dip I use Coral Rx, and you can use a diluted iodine solution. Visual inspection is more important imo. Look for the common suspects as as flatworms.