So I'm definitely a Frühtesterin and have applied these tests as early as mid-Ziklus. The Ziklus started on 09.02.2015 and should at 11.3. end (as of February). Have all 12 used and had not a single line evaporation, which you can see in the picture. Until yesterday, the tests were as white as snow, then came a gossamer second line, which has become even more evident today. To identify already a fairly clear result and also live significantly Say 6-5 days before your period is due (the lower two tests).
Evaporation lines I had it in expensive tests of DM (PreSense early test and of the pharmacy for 5.99, no longer know the brand both at 23.2 (much used too early) -.. See the second image