o-Phenylenediamine Free Base is a peroxidase substrate suitable for use in ELISA procedures. The substrate produces a soluble end product that is orange-brown in color and can be read spectrophotometrically at 450 nm. The OPD reaction may be stopped with 3 N HCl or 3 M H 2 SO 4 and read at 492 nm.
If a person is issued a ticket for an accident in Minnesota, it  will stay on his or her driving record for five years. However, if  the accident was alcohol related, depend â¦ ing on the charge, it can  stay longer. 1 person found this useful.
Best Answer: go to traffic school and the points don't show on your record, if you pay the fine then it stays on your record for three years which is how far insurance companies go back in your traffic history.Source(s): happened to me and according to geico. gwade1516 Â· 9 years ago.Thumbs up.t depends on a few things. One, the type of ticket. If you get a ticket for speeding, that is not as bad as getting ticket for DUI/DWI. Any type of moving violation that involves points will stay on the record, in most cases, for three years.