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Codow - Your trusted brand of analytical reagents

Standard titration solution, indicator solution, buffer solution
Comply with international standards, ISO 9001 quality system

More than 20,000 product specifications, 50,000+ scientific researchers, 8,000+ corporate users’ common trust.

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All products are produced and packaged in a clean environment
The production workshop is equipped with first-class ultrapure water and fresh air system

R&D and production systems comply with ISO 9001 quality system standards.

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Professional production and analysis equipment and instruments

Equipped with advanced production equipment and analytical instruments
Verified and calibrated by authoritative metrology institutions

More than 80 sets of production equipment, more than 30 sets of analytical instruments, and more than 2,000 square meters of analytical space.

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New Products

More than 200 products are updated every month

Ammonium sulfate standard titration solution c[(NH4)2SO4]=0.5 mol/L
Ammonium sulfate standard titration solution c[(NH4)2SO4]=0.5 mol/L
c[(NH4)2SO4]=0.5 mol/L 
New
Ammonium sulfate standard titration solution

$22.00

Sodium carbonate standard titration solution c(Na2CO3)=0.025 mol/L
Sodium carbonate standard titration solution c(Na2CO3)=0.025 mol/L
c(Na2CO3)=0.025 mol/L 
New
Sodium carbonate standard titration solution

$15.00

Hydrochloric acid standard solution c(HCl)=0.006 mol/L
Hydrochloric acid standard solution c(HCl)=0.006 mol/L
c(HCl)=0.006 mol/L 
New
Hydrochloric acid standard solution

$22.00

Periodate acid titration solution c(H5IO6)=0.065 mol/L
Periodate acid titration solution c(H5IO6)=0.065 mol/L
c(H5IO6)=0.065 mol/L 
New
Periodate acid titration solution

$30.00

Ethylenediaminetetraacetic acid disodium standard solution c(EDTA-2Na)=0.025 mol/L
Ethylenediaminetetraacetic acid disodium standard solution c(EDTA-2Na)=0.025 mol/L
c(EDTA-2Na)=0.025 mol/L 
New
Ethylenediaminetetraacetic acid disodium standard solution

$15.00

Ethylenediamine tetraacetic acid standard titration solution c(EDTA)=0.5 mol/L
Ethylenediamine tetraacetic acid standard titration solution c(EDTA)=0.5 mol/L
c(EDTA)=0.5 mol/L 
New
Ethylenediamine tetraacetic acid standard titration solution

$30.00

Iodine standard solution c(I2)=0.1 N
Iodine standard solution c(I2)=0.1 N
c(I2)=0.1 N 
New
Iodine standard solution

$30.00

Silver nitrate standard titration solution c(AgNO3)=0.13 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.13 mol/L
c(AgNO3)=0.13 mol/L 
New
Silver nitrate standard titration solution

$18.00

Sodium standard solution c(Na+)=1 mg/L
Sodium standard solution c(Na+)=1 mg/L
c(Na+)=1 mg/L 
New
Sodium standard solution

$15.00

Iron ion standard solution c(Fe3+)=0.2 g/L
Iron ion standard solution c(Fe3+)=0.2 g/L
c(Fe3+)=0.2 g/L 
New
Iron ion standard solution

$22.00

Fluoride ion standard stock solution c(F-)=1000 mg/L
Fluoride ion standard stock solution c(F-)=1000 mg/L
c(F-)=1000 mg/L 
New
Fluoride ion standard stock solution

$22.00

Silicon ion standard solution c(Si4+)=1 mg/mL
Silicon ion standard solution c(Si4+)=1 mg/mL
c(Si4+)=1 mg/mL 
New
Silicon ion standard solution

$22.00

Silicon standard solution c(Si4+)=200 ppb
Silicon standard solution c(Si4+)=200 ppb
c(Si4+)=200 ppb 
New
Silicon standard solution

$120.00

Manganese ion standard solution c(Mn2+)=3 mg/L
Manganese ion standard solution c(Mn2+)=3 mg/L
c(Mn2+)=3 mg/L 
New
Manganese ion standard solution

$15.00

Manganese ion standard solution c(Mn2+)=0.1 mg/L
Manganese ion standard solution c(Mn2+)=0.1 mg/L
c(Mn2+)=0.1 mg/L 
New
Manganese ion standard solution

$15.00

Iron ion standard solution c(Fe3+)=0.01 mol/L
Iron ion standard solution c(Fe3+)=0.01 mol/L
c(Fe3+)=0.01 mol/L 
New
Iron ion standard solution

$22.00

Bromocresol green-methyl red indicator solution 6 g/L,1:5
Bromocresol green-methyl red indicator solution 6 g/L,1:5
6 g/L,1:5 
New
Bromocresol green-methyl red indicator solution

$15.00

Boric acid solution c(H3BO3)=10 g/L
Boric acid solution c(H3BO3)=10 g/L
c(H3BO3)=10 g/L 
New
Boric acid solution

$22.00

P-naphthylbenzene indicator solution c(C27H20O3)=0.2 g/L
P-naphthylbenzene indicator solution c(C27H20O3)=0.2 g/L
c(C27H20O3)=0.2 g/L 
New
P-naphthylbenzene indicator solution

$30.00

O-phenanthroline indicator c(C12H8N2·H2O)=14.85 g/L,c(FeSO4·7H2O)=0.695 g/L
O-phenanthroline indicator c(C12H8N2·H2O)=14.85 g/L,c(FeSO4·7H2O)=0.695 g/L
c(C12H8N2·H2O)=14.85 g/L,c(FeSO4·7H2O)=0.695 g/L 
New
O-phenanthroline indicator

$15.00

Chrome black T indicator liquid c(C20H12N3NaO7S)=5 g/L
Chrome black T indicator liquid c(C20H12N3NaO7S)=5 g/L
c(C20H12N3NaO7S)=5 g/L 
New
Chrome black T indicator liquid

$15.00

Methyl red indicator solution c(C15H15N3O2)=0.5 mg/mL
Methyl red indicator solution c(C15H15N3O2)=0.5 mg/mL
c(C15H15N3O2)=0.5 mg/mL 
New
Methyl red indicator solution

$22.00

PAN indicator (C15H11N3O)=0.1%(wt)
PAN indicator (C15H11N3O)=0.1%(wt)
(C15H11N3O)=0.1%(wt) 
New
PAN indicator

$15.00

Methylene blue solution c(C16H18N3ClS)=2.338 g/L
Methylene blue solution c(C16H18N3ClS)=2.338 g/L
c(C16H18N3ClS)=2.338 g/L 
New
Methylene blue solution

$22.00

Disodium ethylenediaminetetraacetate buffer solution pH=5.0(25 ℃)
Disodium ethylenediaminetetraacetate buffer solution pH=5.0(25 ℃)
pH=5.0(25 ℃) 
New
Disodium ethylenediaminetetraacetate buffer solution

$22.00

Furfural standard solution c(C5H4O2)=200 μg/mL
Furfural standard solution c(C5H4O2)=200 μg/mL
c(C5H4O2)=200 μg/mL 
New
Furfural standard solution

$22.00

Phthalic acid standard buffer pH=4.0(25 ℃)
Phthalic acid standard buffer pH=4.0(25 ℃)
pH=4.0(25 ℃) 
New
Phthalic acid standard buffer

$30.00

Tris-HCl Buffered Saline 50 mM,pH=8.0(25 ℃)
Tris-HCl Buffered Saline 50 mM,pH=8.0(25 ℃)
50 mM,pH=8.0(25 ℃) 
New
Tris-HCl Buffered Saline

$22.00

Sodium acetate buffer 50 mM,pH=5.5(25 ℃)
Sodium acetate buffer 50 mM,pH=5.5(25 ℃)
50 mM,pH=5.5(25 ℃) 
New
Sodium acetate buffer

$22.00

Acetic-sodium acetate buffer 25 mM,pH=4.0(25 ℃)
Acetic-sodium acetate buffer 25 mM,pH=4.0(25 ℃)
25 mM,pH=4.0(25 ℃) 
New
Acetic-sodium acetate buffer

$22.00

PBS buffer solution 0.005 M,pH=6.8(25 ℃)
PBS buffer solution 0.005 M,pH=6.8(25 ℃)
0.005 M,pH=6.8(25 ℃) 
New
PBS buffer solution

$22.00

Sodium borate buffer solution pH=10.5(25 ℃)
Sodium borate buffer solution pH=10.5(25 ℃)
pH=10.5(25 ℃) 
New
Sodium borate buffer solution

$22.00

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Hot Products

Quality verified by over 50,000 users, high quality and low price

Copper sulfate solution c(CuSO4)=20 g/L
Copper sulfate solution c(CuSO4)=20 g/L
c(CuSO4)=20 g/L 
Hot
Copper sulfate solution

$8.00

Silver nitrate standard titration solution c(AgNO3)=0.1 mol/L
Silver nitrate standard titration solution c(AgNO3)=0.1 mol/L
c(AgNO3)=0.1 mol/L 
Hot
Silver nitrate standard titration solution

$45.00

Sulfuric acid standard titration solution c(1/2H2SO4)=0.1 mol/L
Sulfuric acid standard titration solution c(1/2H2SO4)=0.1 mol/L
c(1/2H2SO4)=0.1 mol/L 
Hot
Sulfuric acid standard titration solution

$9.00

Sodium hydroxide standard titration solution c(NaOH)=0.1 mol/L
Sodium hydroxide standard titration solution c(NaOH)=0.1 mol/L
c(NaOH)=0.1 mol/L 
Hot
Sodium hydroxide standard titration solution

$7.00

Dimethyl yellow indicator solution 中国药典,1 g/L
Dimethyl yellow indicator solution 中国药典,1 g/L
中国药典,1 g/L 
Hot
Dimethyl yellow indicator solution

$11.00

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