TMB (3, 3', 5, 5'-tetramethylbenzidine) is a chromogenic substrate for Horseradish Peroxidase (HRP). TMB produces a deep blue color during the enzymatic degradation of hydrogen peroxide by HRP, and the addition of a stop solution gives a clear yellow color that absorbs at 450nm.
TMB X-tnd is developed to support assays, which require low detection limits while supporting OD readings of highly positive samples – with no precipitation of the TMB substrate, at up to 5.8 mAbs within 60 minutes.
TMB X-tnd® characteristics are:
Best dynamic range
No precipitation
Aqueous based – no organic solvents (REACH Annex XVII compliant)
Low lot-to-lot variation
Suitable for use in electrochemical assays
Specifications
Available sizes
100 mL, 500 mL, 1 L, bulk
Format:
Ready-to-use (RTU)
Stability:
4 years
Development time:
5-30 minutes
Stop solution:
0.35 M H₂SO₄