Wash your hands completely and use your fingers.
This is an old mechanics method to prevent lint from entering the tranny. You can allow the tranny fluid to drip on a rag, even a lint rag. But don't touch it while servicing the tranny.
I know it sounds strange but it is probably the best way to check and service the transmission.
Place the dipstick between your index finger and thumb. Slide the dipstick up through your fingers and it will be clean enough
for the subsequent dip and check of the fluid level.
1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car