Substrate Reagent Pack

8 vials Color A, 8 vials Color B
Catalog # Availability Size / Price Qty
Ancillary Products Available
Buffers, Chelators and Reagents ELISA Kit ELISA
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Product Details
Citations (66)
Supplemental Products
Reviews (29)

Substrate Reagent Pack Summary


Substrate Reagent Pack contains 8 vials of Color Reagent A (stabilized hydrogen peroxide, Part # 895000) and 8 vials of Color Reagent B (stabilized tetramethylbenzidine, Part # 895001), both at 12 mL/vial, producing color development when contacting HRP-conjugated or biotinylated, streptavidin-HRP bound detection antibodies.   


Store unopened at 2-8 °C. Stable for up to 30 days after opening when stored at 2-8 °C.


Warm to room temperature before use. Color Reagent A and Color Reagent B should be mixed together in equal volumes within 15 minutes of use. Protect from light. Add 100 µL of the mixture to each well and incubate at room temperature for 20 minutes while protecting from light. Add Stop Solution (Catalog # DY994) and read the microplate.


  • Caution: Color Reagent B may cause skin, eye, and respiratory irritation. Avoid breathing fumes. Wear protective gloves, clothing, and eye and face protection. Wash hands thoroughly after handling. Please refer to the MSDS on our website prior to use. 

Product Datasheets

Preparation and Storage

Stability & Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to

Citations for Substrate Reagent Pack

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

66 Citations: Showing 1 - 10
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  1. H7 Hemagglutinin nanoparticles retain immunogenicity after >3 months of 25�C storage
    Authors: TZ Chang, L Deng, BZ Wang, JA Champion
    PLoS ONE, 2018;13(8):e0202300.  2018
  2. Serum Soluble Vascular Cell Adhesion Molecule-1 Overexpression Is a Disease Marker in Patients with First-Time Diagnosed Antinuclear Antibodies: A Prospective, Observational Pilot Study
    Authors: M Oleszowsky, MF Seidel
    Biomed Res Int, 2018;2018(0):8286067.  2018
  3. Soluble interleukin-27 receptor alpha is a valuable prognostic biomarker for acute graft-versus-host disease after allogeneic haematopoietic stem cell transplantation
    Authors: S Liu, J Han, H Gong, Y Li, X Bao, J Qi, H Liu, J Chen, X Wu, Y Xu, S Ma, D Wu
    Sci Rep, 2018;8(1):10328.  2018
  4. Soluble CD14 as a Diagnostic Biomarker for Smear-Negative HIV-Associated Tuberculosis
    Authors: Y Liu, OC Ndumnego, T Chen, RS Kim, ER Jenny-Avit, T Ndung'u, D Wilson, JM Achkar
    Pathogens, 2018;7(1):.  2018
  5. GM1 ganglioside prevents axonal regeneration inhibition and cognitive deficits in a mouse model of traumatic brain injury
    Authors: A Benady, D Freidin, CG Pick, V Rubovitch
    Sci Rep, 2018;8(1):13340.  2018
  6. Neuroprotection by Caffeine in Hyperoxia-Induced Neonatal Brain Injury
    Authors: S Endesfelde, U Weichelt, E Strauá, A Schl”r, M Sifringer, T Scheuer, C Bhrer, T Schmitz
    Int J Mol Sci, 2017;18(1):.  2017
  7. Restoring GM1 ganglioside expression ameliorates axonal outgrowth inhibition and cognitive impairments induced by blast traumatic brain injury
    Authors: V Rubovitch, Y Zilberstei, J Chapman, S Schreiber, CG Pick
    Sci Rep, 2017;7(0):41269.  2017
  8. Lettuce-produced hepatitis C virus E1E2 heterodimer triggers immune responses in mice and antibody production after oral vaccination
    Authors: J Liu Clarke, L Paruch, MO Dobrica, I Caras, C Tucureanu, A Onu, S Ciulean, C Stavaru, A Eerde, Y Wang, H Steen, S Haugslien, C Petrareanu, C Lazar, I Popescu, R Bock, J Dubuisson, N Branza-Nic
    Plant Biotechnol. J., 2017;0(0):.  2017
  9. Evaluation of multivalent H2 influenza pandemic vaccines in mice
    Authors: BJ Lenny, S Sonnberg, AF Danner, K Friedman, RJ Webby, RG Webster, JC Jones
    Vaccine, 2017;0(0):.  2017
  10. The ESRP1-GPR137 axis contributes to intestinal pathogenesis
    Authors: LF Mager, VH Koelzer, R Stuber, L Thoo, I Keller, I Koeck, M Langenegge, C Simillion, SP Pfister, M Faderl, V Genitsch, I Tcymbarevi, P Juillerat, X Li, Y Xia, E Karamitopo, R Lyck, I Zlobec, S Hapfelmeie, R Bruggmann, KD McCoy, AJ Macpherson, C Müller, B Beutler, P Krebs
    Elife, 2017;6(0):.  2017
  11. Antigen-specific immunoglobulin variable region sequencing measures humoral immune response to vaccination in the equine neonate
    Authors: RL Tallmadge, SC Miller, SA Parry, MJB Felippe
    PLoS ONE, 2017;12(5):e0177831.  2017
  12. Extracellular Lactate Dehydrogenase A Release From Damaged Neurons Drives Central Nervous System Angiogenesis
    Authors: H Lin, R Muramatsu, N Maedera, H Tsunematsu, M Hamaguchi, Y Koyama, M Kuroda, K Ono, M Sawada, T Yamashita
    EBioMedicine, 2017;0(0):.  2017
  13. IRF5 distinguishes severe asthma in humans and drives Th1 phenotype and airway hyperreactivity in mice
    Authors: TB Oriss, M Raundhal, C Morse, RE Huff, S Das, R Hannum, MC Gauthier, KL Scholl, K Chakrabort, SM Nouraie, SE Wenzel, P Ray, A Ray
    JCI Insight, 2017;2(10):.  2017
  14. YeeJ is an inverse autotransporter from Escherichia coli that binds to peptidoglycan and promotes biofilm formation
    Authors: M Martinez-G, KGK Goh, E Rackaityte, C Sakamoto, B Audrain, DG Moriel, M Totsika, JM Ghigo, MA Schembri, C Beloin
    Sci Rep, 2017;7(1):11326.  2017
  15. Demyelination induced by oxidative stress is regulated by sphingosine 1-phosphate receptors
    Authors: SA O'Sullivan, M Velasco-Es, KK Dev
    Glia, 2017;0(0):.  2017
  16. Regulation of C3 Activation by the Alternative Complement Pathway in the Mouse Retina
    PLoS ONE, 2016;11(8):e0161898.  2016
  17. The Robo4 cytoplasmic domain is dispensable for vascular permeability and neovascularization
    Nat Commun, 2016;7(0):13517.  2016
  18. Marked elevation in plasma osteoprotegerin constitutes an early and consistent feature of cerebral malaria
    Thromb. Haemost., 2016;115(4):773-80.  2016
  19. A C-terminal HSP90 inhibitor restores glucocorticoid sensitivity and relieves a mouse allograft model of Cushing disease.
    Authors: Riebold M, Kozany C, Freiburger L, Sattler M, Buchfelder M, Hausch F, Stalla G, Paez-Pereda M
    Nat Med, 2015;21(3):276-80.  2015
  20. Bone marrow-derived macrophages from aged rats are more responsive to inflammatory stimuli.
    Authors: Barrett J, Costello D, O'Sullivan J, Cowley T, Lynch M
    J Neuroinflammation, 2015;12(0):67.  2015
  21. Mechanism of the antigen-independent cytokinergic SPE-7 IgE activation of human mast cells in vitro.
    Authors: Bax H, Bowen H, Dodev T, Sutton B, Gould H
    Sci Rep, 2015;5(0):9538.  2015
  22. Interleukin-22 is increased in multiple sclerosis patients and targets astrocytes.
    Authors: Perriard G, Mathias A, Enz L, Canales M, Schluep M, Gentner M, Schaeren-Wiemers N, Du Pasquier R
    J Neuroinflammation, 2015;12(0):119.  2015
  23. An automated method for determining the cytoadhesion of Plasmodium falciparum-infected erythrocytes to immobilized cells.
    Authors: Hempel C, Boisen I, Efunshile A, Kurtzhals J, Staalso T
    Malar J, 2015;14(0):112.  2015
  24. Innate immunity drives the initiation of a murine model of primary biliary cirrhosis.
    Authors: Chang C, Chen Y, Zhang W, Leung P, Gershwin M, Chuang Y
    PLoS ONE, 2015;10(3):e0121320.  2015
  25. Non-Human Primates Harbor Diverse Mammalian and Avian Astroviruses Including Those Associated with Human Infections.
    Authors: Karlsson E, Small C, Freiden P, Feeroz M, Matsen F, San S, Hasan M, Wang D, Jones-Engel L, Schultz-Cherry S
    PLoS Pathog, 2015;11(11):e1005225.  2015
  26. Macrophage Migration Inhibitory Factor in Acute Adipose Tissue Inflammation.
    Authors: Kim B, Rongisch R, Hager S, Grieb G, Nourbakhsh M, Rennekampff H, Bucala R, Bernhagen J, Pallua N
    PLoS ONE, 2015;10(9):e0137366.  2015
  27. Early decline in serum phospho-CSE1L levels in vemurafenib/sunitinib-treated melanoma and sorafenib/lapatinib-treated colorectal tumor xenografts.
    Authors: Lee W, Shen S, Shih Y, Chou C, Tseng J, Chin S, Liu K, Chen Y, Jiang M
    J Transl Med, 2015;13(0):191.  2015
  28. Upregulated interleukin-21 receptor on B cells associated with the downregulation of IgE in patients with allergic rhinitis.
    Authors: Jen, Hsiao-Yu, Yang, Yao-Hsu, Chiang, Bor-Luen, Chuang, Ya-Hui
    J Interferon Cytokine Res, 2015;35(1):42-8.  2015
  29. Crucial role of IL1beta and C3a in the in vitro-response of multipotent mesenchymal stromal cells to inflammatory mediators of polytrauma.
    Authors: Hengartner N, Fiedler J, Schrezenmeier H, Huber-Lang M, Brenner R
    PLoS ONE, 2015;10(1):e0116772.  2015
  30. Nonfunctional variant 3 factor H binding proteins as meningococcal vaccine candidates.
    Authors: van der Veen, Stijn, Johnson, Steven, Jongerius, Ilse, Malik, Talat, Genovese, Alessia, Santini, Laura, Staunton, David, Ufret-Vincenty, Rafael L, Pickering, Matthew, Lea, Susan M, Tang, Christop
    Infect Immun, 2014;82(3):1157-63.  2014
  31. Netrin-1 controls sympathetic arterial innervation.
    Authors: Brunet I, Gordon E, Han J, Cristofaro B, Broqueres-You D, Liu C, Bouvree K, Zhang J, Del Toro R, Mathivet T, Larrivee B, Jagu J, Pibouin-Fragner L, Pardanaud L, Machado M, Kennedy T, Zhuang Z, Simons M, Levy B, Tessier-Lavigne M, Grenz A, Eltzschig H, Eichmann A
    J Clin Invest, 2014;124(7):3230-40.  2014
  32. Modulation of endotoxicity of Shigella generalized modules for membrane antigens (GMMA) by genetic lipid A modifications: relative activation of TLR4 and TLR2 pathways in different mutants.
    Authors: Rossi O, Pesce I, Giannelli C, Aprea S, Caboni M, Citiulo F, Valentini S, Ferlenghi I, MacLennan C, D'Oro U, Saul A, Gerke C
    J Biol Chem, 2014;289(36):24922-35.  2014
  33. Alloimmune activation promotes anti-cancer cytotoxicity after rat liver transplantation.
    Authors: Lacotte S, Oldani G, Slits F, Orci L, Rubbia-Brandt L, Morel P, Mentha G, Toso C
    PLoS ONE, 2014;9(3):e91515.  2014
  34. Dimerization is not a determining factor for functional high affinity human plasminogen binding by the group A streptococcal virulence factor PAM and is mediated by specific residues within the PAM a1a2 domain.
    Authors: Bhattacharya S, Liang Z, Quek A, Ploplis V, Law R, Castellino F
    J Biol Chem, 2014;289(31):21684-93.  2014
  35. Cationic lipid-formulated DNA vaccine against hepatitis B virus: immunogenicity of MIDGE-Th1 vectors encoding small and large surface antigen in comparison to a licensed protein vaccine.
    Authors: Endmann A, Klunder K, Kapp K, Riede O, Oswald D, Talman E, Schroff M, Kleuss C, Ruiters M, Juhls C
    PLoS ONE, 2014;9(7):e101715.  2014
  36. Microparticle alpha-2-macroglobulin enhances pro-resolving responses and promotes survival in sepsis.
    Authors: Dalli, Jesmond, Norling, Lucy V, Montero-Melendez, Trinidad, Federici Canova, Donata, Lashin, Hazem, Pavlov, Anton M, Sukhorukov, Gleb B, Hinds, Charles, Perretti, Mauro
    EMBO Mol Med, 2014;6(1):27-42.  2014
  37. Cyclooxygenase inhibition abrogates aeroallergen-induced immune tolerance by suppressing prostaglandin I2 receptor signaling.
    Authors: Zhou W, Goleniewska K, Zhang J, Dulek D, Toki S, Lotz M, Newcomb D, Boswell M, Polosukhin V, Milne G, Wu P, Moore M, FitzGerald G, Peebles R
    J Allergy Clin Immunol, 2014;134(3):698-705.e5.  2014
  38. GPR56 inhibits melanoma growth by internalizing and degrading its ligand TG2.
    Authors: Yang L, Friedland S, Corson N, Xu L
    Cancer Res, 2014;74(4):1022-31.  2014
  39. Detection of antibodies against Turkey astrovirus in humans.
    Authors: Meliopoulos V, Kayali G, Burnham A, Oshansky C, Thomas P, Gray G, Beck M, Schultz-Cherry S
    PLoS ONE, 2014;9(5):e96934.  2014
  40. Hepatocytes induce Foxp3(+) regulatory T cells by Notch signaling.
    Authors: Burghardt S, Claass B, Erhardt A, Karimi K, Tiegs G
    J Leukoc Biol, 2014;96(4):571-7.  2014
  41. Latent TGF-beta binding protein 4 promotes elastic fiber assembly by interacting with fibulin-5.
    Authors: Noda K, Dabovic B, Takagi K, Inoue T, Horiguchi M, Hirai M, Fujikawa Y, Akama T, Kusumoto K, Zilberberg L, Sakai L, Koli K, Naitoh M, von Melchner H, Suzuki S, Rifkin D, Nakamura T
    Proc Natl Acad Sci U S A, 2013;110(8):2852-7.  2013
  42. Shedding of c-Met ectodomain correlates with c-Met expression in non-small cell lung cancer.
    Authors: Fu, Le, Guo, Wei, Liu, Bingshan, Sun, Linlin, Bi, Zhenghon, Zhu, Li, Wang, Xinyan, Liu, Bin, Xie, Qian, Li, Ke
    Biomarkers, 2013;18(2):126-35.  2013
  43. The CD8-derived chemokine XCL1/lymphotactin is a conformation-dependent, broad-spectrum inhibitor of HIV-1.
    Authors: Guzzo C, Fox J, Lin Y, Miao H, Cimbro R, Volkman B, Fauci A, Lusso P
    PLoS Pathog, 2013;9(12):e1003852.  2013
  44. The role of alveolar epithelial cells in initiating and shaping pulmonary immune responses: communication between innate and adaptive immune systems.
    Authors: Chuquimia OD, Petursdottir DH, Rahman MJ, Hartl K, Singh M, Fernandez C
    PLoS ONE, 2012;7(2):e32125.  2012
  45. A Monoclonal Antibody-GDNF Fusion Protein Is Not Neuroprotective and Is Associated with Proliferative Pancreatic Lesions in Parkinsonian Monkeys.
    Authors: Ohshima-Hosoyama S, Simmons HA, Goecks N
    PLoS ONE, 2012;7(6):e39036.  2012
  46. A novel role for insulin resistance in the connection between obesity and postmenopausal breast cancer.
    Authors: Weichhaus M, Broom J, Wahle K, Bermano G
    Int. J. Oncol., 2012;41(2):745-52.  2012
  47. Decompensated heart failure is associated with reduced corin levels and decreased cleavage of pro-atrial natriuretic peptide.
    Authors: Ibebuogu UN, Gladysheva IP, Houng AK
    Circ Heart Fail, 2011;4(2):114-20.  2011
  48. Apolipoprotein B binding domains: evidence that they are cell-penetrating peptides that efficiently deliver antigenic peptide for cross-presentation of cytotoxic T cells.
    Authors: Sakamoto N, Rosenberg AS,
    J. Immunol., 2011;186(8):5004-11.  2011
  49. Combined Flt3L/TK gene therapy induces immunological surveillance which mediates an immune response against a surrogate brain tumor neoantigen.
    Authors: King GD, Muhammad AK, Larocque D
    Mol. Ther., 2011;19(10):1793-801.  2011
  50. Influence of galectin-9/Tim-3 interaction on herpes simplex virus-1 latency.
    Authors: Reddy PB, Sehrawat S, Suryawanshi A
    J. Immunol., 2011;187(11):5745-55.  2011
  51. Adiponectin inhibits leptin signalling via multiple mechanisms to exert protective effects against hepatic fibrosis.
    Authors: Handy JA, Fu PP, Kumar P
    Biochem. J., 2011;440(3):385-95.  2011
  52. Systemic immunization with CCL27/CTACK modulates immune responses at mucosal sites in mice and macaques.
    Authors: Kraynyak KA, Kutzler MA, Cisper NJ, Khan AS, Draghia-Akli R, Sardesal NY, Lewis MG, Yan J, Weiner DB
    Vaccine, 2010;28(8):1942-51.  2010
  53. PEGylation of interleukin-10 for the mitigation of enhanced pain states.
    Authors: Soderquist RG, Milligan ED, Harrison JA, Chavez RA, Johnson KW, Watkins LR, Mahoney MJ
    J Biomed Mater Res A, 2010;93(3):1169-79.  2010
  54. Enzyme-linked enzyme-binding assay for Pin1 WW domain ligands.
    Authors: Mercedes-Camacho AY, Etzkorn FA,
    Anal. Biochem., 2010;402(1):77-82.  2010
  55. Evaluation of soluble junctional adhesion molecule-A as a biomarker of human brain endothelial barrier breakdown.
    Authors: Haarmann A, Deiss A, Prochaska J, Foerch C, Weksler B, Romero I, Couraud PO, Stoll G, Rieckmann P, Buttmann M
    PLoS ONE, 2010;5(10):e13568.  2010
  56. Macrophage migration inhibitory factor anti-thrombin III complexes are decreased in bladder cancer patient serum: Complex formation as a mechanism of inactivation.
    Authors: Meyer-Siegler KL, Cox J, Leng L, Bucala R, Vera PL
    Cancer Lett., 2010;290(1):49-57.  2010
  57. A novel role for constitutively expressed epithelial-derived chemokines as antibacterial peptides in the intestinal mucosa.
    Authors: Kotarsky K, Sitnik KM, Stenstad H, Kotarsky H, Schmidtchen A, Koslowski M, Wehkamp J, Agace WW
    Mucosal Immunol, 2010;3(1):40-8.  2010
  58. A role for calcium-calmodulin in regulating nitric oxide production during skeletal muscle satellite cell activation.
    Authors: Tatsumi R, Wuollet AL, Tabata K, Nishimura S, Tabata S, Mizunoya W, Ikeuchi Y, Allen RE
    Am. J. Physiol., Cell Physiol., 2009;296(4):C922-9.  2009
  59. Endothelin-converting enzyme-2 is increased in Alzheimer's disease and up-regulated by Abeta.
    Authors: Palmer JC, Baig S, Kehoe PG, Love S
    Am. J. Pathol., 2009;175(1):262-70.  2009
  60. Soluble ErbB3 levels in bone marrow and plasma of men with prostate cancer.
    Authors: Lin SH, Lee YC, Choueiri MB, Wen S, Mathew P, Ye X, Do KA, Navone NM, Kim J, Tu SM, Yu-Lee LY, Logothetis CJ
    Clin. Cancer Res., 2008;14(12):3729-36.  2008
  61. Nanobacteria are mineralo fetuin complexes.
    Authors: Raoult D, Drancourt M, Azza S, Nappez C, Guieu R, Rolain JM, Fourquet P, Campagna B, La Scola B, Mege JL, Mansuelle P, Lechevalier E, Berland Y, Gorvel JP, Renesto P
    PLoS Pathog., 2008;4(2):e41.  2008
  62. Up-regulated macrophage migration inhibitory factor protects apoptosis of dermal fibroblasts in patients with systemic sclerosis.
    Authors: Kim JY, Kwok SK, Hur KH, Kim HJ, Kim NS, Yoo SA, Kim WU, Cho CS
    Clin. Exp. Immunol., 2008;152(2):328-35.  2008
  63. Soluble triggering receptor expressed on myeloid cell-1 is increased in patients with ventilator-associated pneumonia: a preliminary report.
    Authors: Horonenko G, Hoyt JC, Robbins RA, Singarajah CU, Umar A, Pattengill J, Hayden JM
    Chest, 2007;132(1):58-63.  2007
  64. Human cytomegalovirus-specific CD4+-T-cell cytokine response induces fractalkine in endothelial cells.
    Authors: Bolovan-Fritts CA, Trout RN, Spector SA
    J. Virol., 2004;78(23):13173-81.  2004
  65. ELR+ CXC chemokines in human milk.
    Authors: Maheshwari A, Christensen RD, Calhoun DA
    Cytokine, 2003;24(3):91-102.  2003
  66. VSIG-3 as a ligand of VISTA inhibits human T-cell function.
    Authors: Wang J, Wu G, Manick B, Hernandez V, Renelt M, Erickson C, Guan J, Singh R, Rollins S, Solorz A, Bi M, Li J, Grabowski D, Dirkx J, Tracy C, Stuart T, Ellinghuysen C, Desmond D, Foster C, Kalabokis V
    Immunology, 0;156(1):74-85.  0


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Substrate Reagent Pack
By Anonymous on 01/03/2019

Substrate Reagent Pack
By Anonymous on 12/10/2018

Substrate Reagent Pack
By Anonymous on 11/21/2018

It is very stable before mixing the reagent A and B. One bottle of each is exactly enough for two plates which makes measuring simple.

Substrate Reagent Pack
By Anonymous on 11/13/2018

Substrate Reagent Pack
By Anonymous on 09/30/2018

Substrate Reagent Pack
By Anonymous on 08/17/2018

Substrate Reagent Pack
By Anonymous on 06/19/2018

Substrate Reagent Pack
By Anonymous on 06/15/2018

Substrate Reagent Pack
By Anonymous on 05/10/2018

Substrate Reagent Pack
By Anonymous on 03/30/2018

Substrate Reagent Pack
By Anonymous on 02/22/2018

Substrate Reagent Pack
By Anonymous on 02/06/2018

Substrate Reagent Pack
By Anonymous on 02/06/2018

Substrate Reagent Pack
By Anonymous on 01/19/2018

Substrate Reagent Pack
By Anonymous on 12/20/2017

Substrate Reagent Pack
By Anonymous on 12/15/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 12/05/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 09/07/2017

Our lab does many ELISAs. These substrate solutions are excellent, affordable, and easy to use.

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 07/19/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 07/17/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 07/14/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 07/06/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 06/15/2017

Really Easy to use.
After the SA-HRP detection step for ELISA, wash wells 4 times with wash buffer, and add the Substrate and incubate for 20 mins in the dark. Stop the reaction using 0.2 M sulfuric acid. Read the plate at 450nm

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 05/03/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 03/29/2017

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 11/28/2016

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 09/01/2016

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 04/26/2016

Substrate Reagent Pack (8 vials Color A, 8 vials Color B)
By Anonymous on 01/18/2016