Malachite Green Test (Tissue)


For Aquatic Products

Specs:10 T / box
Testing Time:15 mins
Regulation: CN / EU / RU / US

What is Malachite Green test?

Malachite Green Test is used for testing Malachite Green residues in livestock, poultry and aquatic products, suitable for site rapid testing of all kinds of enterprises, testing agencies and supervision departments. The whole test procedure only takes 35min, easy to operate and read.
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What is Malachite green?

1. Definition

Although it is called malachite green, in fact, it does not contain malachite, only the two are similar in color. Malachite and malachite green are two completely different substances.

Malachite green is a toxic triphenylmethane chemical. It is both a dye and a fungicidal, bactericidal, and parasiticidal drug. Long-term excessive use can cause cancer, and it is prohibited to be added in the aquaculture sector.

2. Structure

Malachite green is a synthetic organic compound. It is produced by mixing 1 mole of benzaldehyde (Benzaldehyde) and 2 moles of xylylamine in concentrated hydrochloric acid and heating to condense into Leuco base. 

Under acidic conditions, lead peroxide is added to oxidize. Pigment base is precipitated in the alkaline solution. It belongs to the triphenylmethane type green dye.

3. Malachite green synthesis

Malachite green is prepared by the condensation of benzaldehyde and dimethylaniline to give colorless malachite green.

Malachite green uses

1. Malachite green dye

Malachite green can be used as a dye for silk, leather and paper. Commercial malachite green dye is a pigment that is dissolved in hot oxalic acid solution and cooled to obtain the crystal of oxalate, 2C23H24N2. C2H2O4. 

Or after neutralizing with hydrochloric acid, a certain amount of zinc chloride ZnCl2 is added to crystallize the zinc chloride double salt 3C23H25N2CL.2ZnCl2 to become a green alkaline dye. It is used to dye wool, silk, leather, etc. It is a full-time dye.

Malachite green can be used as a biological staining agent to stain cells or cell tissues to blue-green for convenient research under a microscope. It can be used to stain host cells of plant virus infection, staining of bacteria, spores, and red blood cells and roundworm eggs.

2. Malachite green fungicide

Malachite green can be used to treat parasites, fungi, or bacterial infections of fish or fish eggs. It is particularly effective against the fungus Saprolegnia. Fish eggs on fish farms can be infected with this fungus. 

Malachite green is also commonly used to treat freshwater aquatic products affected by parasites. It is used as a bacteriostatic agent or amoeba protozoal agent. 

It has high toxicity, high residue and other side effects on marine animals such as fatty carp and catfish. Therefore, it is usually only half the amount when used.

3. Other aspects

Used as a bacterial polysaccharide reagent; Used as a clinical diagnostic reagent (measurement of inorganic phosphate);

Used for photometric determination of gallium, tantalum and antimony; catalytic photometric determination of tungsten; spot test for sulfite and cerium and tungsten; Used as acid-base indicator, pH 0.0 (yellow) ~ 2.0 (green), 11.6 (blue-green) ~ 14 (colorless); Used as redox indicator.

The hazards of Malachite Green

Malachite green has special effects on water mold and fish eggs. There are no special drugs on the market that can solve water mold in a short time. 

This is why this product is banned in the aquaculture industry. It has been banned for many years, and the fundamental reason for aquaculture farmers to continue to use malachite green in violation of regulations. 

In other respects, it can also be used for the treatment of gill mold, melons, trichophyton, ringworm, oblique tuberculosis, third-generation worm disease, and other bacterial diseases. 

China's Ministry of Agriculture has listed malachite green as a banned aquatic product, and ornamental fish that are not food fish can also be used.

Studies have found that when malachite green enters the body of aquatic animals, it is rapidly metabolized into a fat-soluble colorless malachite green. 

Malachite green has potential carcinogenic, teratogenic, and mutagenic effects. 

Its use in the breeding industry has not been approved by the US Food and Drug Administration (FDA); according to EU Act 2002/675 / EC, animal sources The total amount of malachite green and colorless malachite green residues in sex food is limited to 2μg/kg; 

Japan's positive list also clearly stipulates that malachite green residues cannot be detected in imported aquatic products; 

China's agricultural industry standard "NY5071- 2002 Malachite green is also listed as a banned drug in the Guidelines for the use of pollution-free food fish medicine.

Features of Malachite green Test

1. 15min reading results

2. Detection limits respond to EU and US FDA norms

3. Neither professionals nor equipment required

4. Easy to operate and read

Detection Method of Malachite green Test

MG Test is based on the competitive inhibition immune Malachite Green assay. During the lateral flow procedure, MG residues in extracted samples will bind to the colloidal gold-labeled specific monoclonal antibodies, inhibit the combination of antibodies. 

Then the MG-BSA conjugates on the NC membrane, leading to color changes of the test line (line T).

The detection methods of malachite green are mainly physical and chemical detection methods and immunological detection methods. 

The physical and chemical detection methods include: thin layer chromatography, spectrophotometry, high pressure liquid chromatography, liquid chromatography mass spectrometry, gas chromatography mass spectrometry, etc., compared with immunological detection methods are more commonly used.

Samples of Malachite green Test

Samples include: pork, chicken, fish, shrimp and other aquatic products.

Detection Limit of Malachite green Test

The LOD may change according to requirement or specimen's difference, please refer to kit instruction for further details.

Importance of Malachite green Test

Malachite green Test can help manufacturers, regulatory agencies, and the public monitor product quality and help humans protect their health.

Components of Malachite green Test

1. Test Cards: 10 pcs

2. Extracting Reagent(6ml):10 bottle

3. Reagent A(55ml):1 bottle

4. Reagent B(6ml):1 bottle

5. Reagent C(12ml):1 bottle

6. Purifying Reagent(5ml):2 bottles

7. Derivatization Reagent(2ml):1 bottle

8. Re-hydration fluid(12ml):1 bottle

9. Centrifuge Tubes(15ml):20pcs

10. Product Instruction:1

How to use Malachite green Test?

1. Prepare the sample. (Refer to the instruction.)

2. All reagents and Test Cards should be at room temperature before using. Please use the Test Cards within 1 hour.

3. Using a Mini pipette, inject 75ml of the sample into the sample hole (S hole).

4. Start the timer when the sample solution flows. After 10mins, interpret the test results according to the sketch picture. The result in the other time period is invalid.


Since there are no cheap and effective alternatives, the use of malachite green in aquaculture has been repeatedly banned. Malachite green is potentially carcinogenic, teratogenic, and mutagenic, so it poses a huge health threat to consumers. 

It is timely discovered that malachite green in aquatic products has become what every consumer wants to do the thing.

The malachite green rapid detection kit provided by BALLYA can effectively detect malachite green contained in aquatic products, which can further protect the safety of consumers. 

This kit is easy to operate, and has a short test time and high accuracy. The test results comply with EU standards.

How to order Malachite green Test?

Please check the online catalog and contact our sale representative via email: or fill out contact form below:

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