During the lab test, the actual weight of Dettol soap was found to be 117.0470 gm, but the weight mentioned on the wrapper was 125 gm.

"The wrapper of Dettol soap bar collected by us mentioned its weight to be 125gm. However, the actual weight in our tests was 117.0470gm," said a FDA official.
“The letter received from FDA claimed lesser weight not quality. We confirm that Dettol Soap is 100% safe to use and it goes through a series of rigorous tests. As per the packaged commodities guidelines, the net weight specified on the pack is the weight observed at the time of packaging,” said a Reckitt Benckiser spokesperson.
Technically, all soaps lose moisture during the journey to retail outlets and hence we witness a drop in the weight, the spokesperson said.
Source-Medindia