Go to Top Lab Hints Put out only the amount of lead nitrate solution that will be used. Calibration of the Beral pipet dispensers may be needed. You may use a separate plastic pipet tip attached to a Beral pipet in order to avoid the calibration problem. The chemicals are toxic. The alternative chemicals are less toxic.
Trisodium phosphate is sufficiently basic to corrode eye tissue.
Go to Top Disposal Flick the 12-well strips into one central collection beaker. Treat the solution with 1 M sulfuric acid. Wait one week. Discard the filtrate at the sink. Save the solid for disposal with heavy metal wastes.