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Chromogenic Kits

Learn more about our Chromogenic Kits.

Phospholipid Emulsions

Our highly stable phospholipid emulsions are suitable for use in analyses related to procoagulant and anticoagulant pathways.


Buffers and BSA

Our buffers are thoroughly validated for use in Hemostasis research or Quality Control and contains carefully validated Bovine Serum Albumin (BSA).

Learn more about our BSA validation:

20% BSA

Liquid solution of carefully validated BSA for use as a protein stabilizing agent in buffers and other solutions.

REF B050

Liquid solution of 20% BSA (w/w). Available in packages of 6 x 20 mL.


Diluent buffers for sensitive proteins such as coagulation factors.


Tris 10% BSA - Stock Solution. Available as 50 or 100 mL.


Tris 2% BSA - Stock Solution. Available in packages of 6 x 20 mL.

Ecarin Diluent

Buffer for reconstitution and dilution of the prothrombin activating enzyme Ecarin and of the crude venom Echis Carinatus.

REF D0413

Ecarin Diluent - Working Solution. Available in packages of 6 x 20 mL.


2019-06-20 ISTH, Melbourne July 6-10, 2019.

Rossix will present three posters related to analysis of Factor IX at the ISTH in Melbourne:

PB0099 - Evaluation of Lupus Anticoagulant interference in a chromogenic Factor IX kit for determination of

Factor IX activity

PB1294 - Assessment of Factor IX Padua activity with a one-stage clotting method and with FXIa- and tissue factor/FVIIa-based chromogenic methods

PB1295 - Recombinant Factor IX fused with albumin (rFIX-HSA) is underassigned by one-stage methods with silica as contact activator

More information


2016-06-22 Publication in collaboration with NovoNordisk

Rosén P, Rosén S, Ezban M, Persson E.

Overestimation of N-glycoPEGylated factor IX activity in one-stage factor IX clotting assay owing to silica-mediated premature conversion to activated factor IX.

J Thromb Haemost 2016; 14: 1420-7.


2015-04-13 Publication in collaboration with AstraZeneca

Ann Lövgren et al. Blood Coagulation and Fibrinolysis, Characterization of thrombin derived from 

human recombinant prothrombin.

Open access: click here