This product has been developed for applications that require high contrast between the chromogen and Hematoxylin counterstain.The resulting stain is a darker brown than standard DAB and somewhat more sensitive. 3,3"Diaminobenzidine (DAB) is a widely used chromogen for immunohistochemical staining and immunoblotting.When in the presence of peroxidase enzyme, DAB produces a brown precipitate that is insoluble in alcohol.This product is available in a two component form consisting of a liquid, refrigerator stable DAB Chromogen and DAB Substrate (High Contrast).The use of liquid components reduces some risks associated with handling powders (ie. dust inhalation), and eliminates waste which often results from using tablets that require a predetermined final volume.

ScyTek始建于1991年，以成为世界级生命科学研究试剂生产商为目标。ScyTek从创立之初开始, 就采取了严格的原材料筛选程序，确保所有出厂产品都具有最高的品质

按照为工业客户提供OEM服务以及同时服务科研市场的策略，ScyTek能够进行大批量生产而保持总成本降到最低，始终坚持为客户传递其成本优势的政策。

如今， ScyTek生产多种优质试剂，不断应用于各种学科，包括免疫学，组织学，细胞学，微生物学和血液学等.