Dyes, Stains, & Indicators

Gold Biotechnology's dyes and stains are used in numerous biological applications, including protein staining, electrophoresis, bacterial classification and Western staining. GoldBio’s catalog of high-quality dyes include Basic Fuschin, Brilliant Green, Bromocresol Green, Bromophenol Blue, Coomassie Stains, Crystal Violet, Orange G, Ponceau S and Xylenol Blue, among others. GoldBio guarantees high-quality products with excellent quality control and at a price that means you can focus your research money on your research.
Showing 21-39 of 39 items.

Bromothymol blue sodium salt

Catalog ID Size Pricing
B-750-10 10 g $ 28.00
B-750-100 100 g $ 263.00
B-750-250 250 g $ 554.00
B-750-500 500 g $ 950.00

Description

No description available

Product Specifications

Catalog ID B-750
CAS # 34722-90-2
MW 646.36 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at room temperature.
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B-750-10 10 g $ 28.00
B-750-100 100 g $ 263.00
B-750-250 250 g $ 554.00
B-750-500 500 g $ 950.00

Coomassie Brilliant Blue G-250

Catalog ID Size Pricing
C-460-5 5 g $ 24.00
C-460-25 25 g $ 33.00
C-460-50 50 g $ 63.00

Description

Coomassie Brilliant Blue G-250 (CBBG) is a member of the Coomassie family and is used as a common analytical dye in SDS-PAGE and BN-PAGE. CBBG can also be used with the Bradford Method to determine protein concentration.

Product Specifications

Catalog ID C-460
CAS # 6104-58-1
MW 854.02 g/mol
Storage/Handling Store desiccated at room temperature.
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C-460-5 5 g $ 24.00
C-460-25 25 g $ 33.00
C-460-50 50 g $ 63.00

Coomassie Brilliant Blue R-250

Catalog ID Size Pricing
C-461-5 5 g $ 25.00
C-461-25 25 g $ 37.00
C-461-100 100 g $ 69.00

Description

Coomassie Brilliant Blue R-250 (CBBR) is a member of the Coomassie family and is used extensively as an analytical dye in SDS-PAGE.

Product Specifications

Catalog ID C-461
CAS # 6104-59-2
MW 825.97 g/mol
Storage/Handling Store desiccated at room temperature.
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C-461-5 5 g $ 25.00
C-461-25 25 g $ 37.00
C-461-100 100 g $ 69.00

Crystal violet

Catalog ID Size Pricing
C-328-10 10 g $ 15.00
C-328-25 25 g $ 25.00
C-328-50 50 g $ 40.00
C-328-100 100 g $ 61.00

Description

Crystal violet is used in the classification of bacteria and is the active ingredient in Gram stain.

Product Specifications

Catalog ID C-328
CAS # 548-62-9
MW 407.99 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at room temperature.
UN Number 3077
Item Class 9
Group Number III
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C-328-10 10 g $ 15.00
C-328-25 25 g $ 25.00
C-328-50 50 g $ 40.00
C-328-100 100 g $ 61.00

Crystal violet, High Purity (Bulk)

Catalog ID Size Pricing
C-370-1 1 kg $ 252.00
C-370-2.5 2.5 kg $ 547.00
C-370-5 5 kg $ 952.00
C-370-10 10 kg $ 1,655.00

Description

Crystal violet is used in the classification of bacteria and is the active ingredient in Gram stain.

Product Specifications

Catalog ID C-370
CAS # 548-62-9
MW 407.99 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at room temperature. Protect from light.
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C-370-1 1 kg $ 252.00
C-370-2.5 2.5 kg $ 547.00
C-370-5 5 kg $ 952.00
C-370-10 10 kg $ 1,655.00

DAB Tetrahydrochloride Hydrate

Catalog ID Size Pricing
D-320-1 1 g $ 44.00
D-320-5 5 g $ 72.00
D-320-10 10 g $ 137.00
D-320-25 25 g $ 317.00

Description

DAB tetrahydrochloride hydrate is a water soluble form of 3-3'-diaminobenzidine and is used to stain for peroxidase activity. The intensity of DAB staining can be increased with the addition of cobalt, nickel or silver ions.

Product Specifications

Catalog ID D-320
CAS # 868272-85-9
MW 360.11 g/mol
Grade REAGENT GRADE
Storage/Handling Store at -20°C.
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D-320-1 1 g $ 44.00
D-320-5 5 g $ 72.00
D-320-10 10 g $ 137.00
D-320-25 25 g $ 317.00

Fluorescein isothiocyanate Isomer I (FITC)

Catalog ID Size Pricing
F-050-100 100 mg $ 46.00
F-050-1 1 g $ 221.00
F-050-2.5 2.5 g $ 526.00
F-050-5 5 g $ 1,001.00

Description

No description available

Product Specifications

Catalog ID F-050
CAS # 3326-32-7
MW 389.39 g/mol
Storage/Handling Store desiccated at -20°C. Protect from light.
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F-050-100 100 mg $ 46.00
F-050-1 1 g $ 221.00
F-050-2.5 2.5 g $ 526.00
F-050-5 5 g $ 1,001.00

INT Dye (Iodonitrotetrazolium chloride)

Catalog ID Size Pricing
I-531-500 500 mg $ 63.00
I-531-10 10 g $ 285.00
I-531-25 25 g $ 679.00
I-531-50 50 g $ 1,290.00

Description

p-Iodonitrotetrazolium Violet (also called INT) is a tetrazolium dye that turns purple upon reduction. INT dye is often used to visualize dehydrogenase activity histochemically as well as western blot staining and as a staining agent for soft agar colony formation assays.

Product Specifications

Catalog ID I-531
CAS # 146-68-9
MW 505.70 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at -20°C. Protect from light.
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I-531-500 500 mg $ 63.00
I-531-10 10 g $ 285.00
I-531-25 25 g $ 679.00
I-531-50 50 g $ 1,290.00

Methyl blue

Catalog ID Size Pricing
A-298-1 1 kg $ 365.00
A-298-2.5 2.5 kg $ 703.00
A-298-5 5 kg $ 1,082.00
A-298-10 10 kg $ 1,664.00

Description

Methyl blue or its constituents are used to stain collagen, as the fiber stain in Masson's trichrome.

Product Specifications

Catalog ID A-298
CAS # 28983-56-4
MW 799.80 g/mol
Grade MOLECULAR BIOLOGY GRADE
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A-298-1 1 kg $ 365.00
A-298-2.5 2.5 kg $ 703.00
A-298-5 5 kg $ 1,082.00
A-298-10 10 kg $ 1,664.00

Methylene Blue

Catalog ID Size Pricing
M-680-25 25 g $ 15.00
M-680-100 100 g $ 45.00
M-680-500 500 g $ 120.00

Description

Methylene blue, chloride trihydrate is a stain that is useful in many staining techniques such as Wright's stain, Jenner's stain, Mallory's phloxine-methylene blue stain, and Levin & Black's stain. Methylene blue can also be used to distinguish between living and non-living cells since it is not able to penetrate living cells.

Product Specifications

Catalog ID M-680
CAS # 7220-79-3
MW 373.90 g/mol
Grade REAGENT GRADE
Storage/Handling Store desiccated at room temperature.
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M-680-25 25 g $ 15.00
M-680-100 100 g $ 45.00
M-680-500 500 g $ 120.00

Molybdic Acid Ammonium Salt Tetrahydrate, ACS Grade

Catalog ID Size Pricing
M-780-100 100 g $ 35.00
M-780-500 500 g $ 125.00

Description

Molybdic acid is a compound used to help visualize molecules without damaging the samples via cryo-negative staining.

Product Specifications

Catalog ID M-780
CAS # 12027-67-7
MW 1235.86 g/mol
Storage/Handling Store at room temperature.
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M-780-100 100 g $ 35.00
M-780-500 500 g $ 125.00

Neutral red dye (content >90%)

Catalog ID Size Pricing
N-130-10 10 g $ 59.00
N-130-250 250 g $ 313.00
N-130-500 500 g $ 521.00
N-130-1 1 kg $ 869.00

Description

Neutral red dye is a dark brown to dark green power used to stain nuclei red, in cell viability tests, and as a pH indicator (transition of pH indicator: pH 6.8-8.0, red to yellow). Additionally, it is used to prepare neutral red paper and as a histological stain for lysozymes.

Product Specifications

Catalog ID N-130
CAS # 553-24-2
MW 288.78 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store at 4°C. Protect from light.
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N-130-10 10 g $ 59.00
N-130-250 250 g $ 313.00
N-130-500 500 g $ 521.00
N-130-1 1 kg $ 869.00

Orange G, Sodium Salt

Catalog ID Size Pricing
O-020-100 100 g $ 48.00

Description

Orange G, sodium salt is a reagent used as a tracking dye for nucleic acids in gel electrophoresis. Orange G migrates at about the same rate as a 50 bp DNA fragment on a 1% agarose gel.

Product Specifications

Catalog ID O-020
CAS # 1936-15-8
MW 452.37 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at room temperature.
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O-020-100 100 g $ 48.00

Phenol Red

Catalog ID Size Pricing
P-117-500 500 g $ 200.00
P-117-1 1 kg $ 376.00
P-117-2.5 2.5 kg $ 883.00
P-117-5 5 kg $ 1,682.00

Description

No description available

Product Specifications

Catalog ID P-117
CAS # 143-74-8
MW 354.38 g/mol
Grade MOLECULAR BIOLOGY GRADE
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P-117-500 500 g $ 200.00
P-117-1 1 kg $ 376.00
P-117-2.5 2.5 kg $ 883.00
P-117-5 5 kg $ 1,682.00

Ponceau S

Catalog ID Size Pricing
P-330-10 10 g $ 15.00
P-330-50 50 g $ 55.00

Description

Ponceau S is the sodium salt of a diazo dye used as a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF. It is often used in the staining of polypeptides to be later blot-sequenced because it does not adversely affect the sequencing of the blotted peptides. The stain is also reversible with water washes, preferable for immunological detection, and can even be completely removed. Ponceau S is a negatively charged stain which binds to positively charged amino acids as well as non-polar regions of proteins. The limit of detection for Ponceau S is ~250 ng of protein.

Product Specifications

Catalog ID P-330
CAS # 6226-79-5
MW 760.57 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at room temperature.
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P-330-10 10 g $ 15.00
P-330-50 50 g $ 55.00

Ponceau S Solution 1 mg/mL

Catalog ID Size Pricing
P-330-SL1 1 L $ 70.00

Description

Ponceau S is the sodium salt of a diazo dye used as a stain for rapid reversible staining of protein bands on nitrocellulose or PVDF.It is often used in the staining of polypeptides to be later blot-sequenced because it does not adversely affect the sequencing of the blotted peptides.The stain is also reversible with water washes, preferable for immunological detection, and can even be completely removed.Ponceau S is a negatively charged stain which binds to positively charged amino acids as well as non-polar regions of proteins. The limit of detection for Ponceau S is ~250 ng of protein.

Product Specifications

Catalog ID P-330-SL
MW 760.57 g/mol
Grade MOLECULAR BIOLOGY GRADE
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P-330-SL1 1 L $ 70.00

Thiazolyl Blue Tetrazolium Bromide (MTT)

Catalog ID Size Pricing
T-030-1 1 g $ 30.00
T-030-2.5 2.5 g $ 72.00
T-030-5 5 g $ 92.00
T-030-10 10 g $ 165.00

Description

Thiazolyl blue tetrazolium bromide (often called MTT) is a common dye used in Cell Proliferation assays or Cell Growth assays. MTT is converted to water-insoluble, dark blue MTT-formazan by mitochondrial dehydrogenases of living cells. The intensity of the color can then be measured colorimetrically at a wavelength of 570 nm.

Product Specifications

Catalog ID T-030
CAS # 298-93-1
MW 414.32 g/mol
Storage/Handling Store desiccated at 4°C. Protect from light and air.
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T-030-1 1 g $ 30.00
T-030-2.5 2.5 g $ 72.00
T-030-5 5 g $ 92.00
T-030-10 10 g $ 165.00

Xylene Cyanol FF, Ultra Pure

Catalog ID Size Pricing
X-300-5 5 g $ 30.00

Description

Xylene cyanol FF is commonly used as a tracking dye in DNA gels and runs at approximately the same rate as a 4 kb DNA fragment on a 1% agarose gel.

Product Specifications

Catalog ID X-300
CAS # 2650-17-1
MW 538.61 g/mol
Storage/Handling Store desiccated at room temperature.
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X-300-5 5 g $ 30.00

Xylenol blue

Catalog ID Size Pricing
X-040-5 5 g $ 35.00
X-040-50 50 g $ 292.00
X-040-100 100 g $ 531.00
X-040-250 250 g $ 1,187.00

Description

Xylenol Blue is a useful alternative to thymol blue developed in the 1920s. Xylenol Blue can be used at half the concentration that thymol blue requires. It is functional at the same two pH ranges, acidic (pH 1-3), which transitions from red to yellow, and basic (pH 8-10), which transitions from yellow to blue. Xylenol Blue may be substituted for any experiment that requires thymol blue.

Product Specifications

Catalog ID X-040
CAS # 125-31-5
MW 410.49 g/mol
Grade MOLECULAR BIOLOGY GRADE
Storage/Handling Store desiccated at room temperature.
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X-040-5 5 g $ 35.00
X-040-50 50 g $ 292.00
X-040-100 100 g $ 531.00
X-040-250 250 g $ 1,187.00

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