SKU: 15226490941

ChemWorld METHYLENE BLUE 1% Pharmaceutical Grade Ph. Eur. + BOOK

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Description

ChemWorld METHYLENE BLUE 1% Pharmaceutical Grade Ph. Eur. + BOOKMethylene Blue 1% (Ph. Eur.) ChemWorld 100 ml Methylene blue (CHClNS) is an organic chemical compound belonging to the phenothiazine dye group. It is widely used in chemistry, biology, and medicine. Its basic chemical properties include: Chemical formula and structure Summary formula: CHClNS Molar mass: 319. 85 g mol The structure contains a phenothiazine system with amine substituents and a chloride ion. Ingredients: distilled water, methylene blue

Methylene Blue 1% (Ph. Eur.) ChemWorld

100 ml

 

Methylene blue (C₁₆H₁₈ClN₃S) is an organic chemical compound belonging to the phenothiazine dye group. It is widely used in chemistry, biology, and medicine. Its basic chemical properties include:

Chemical formula and structure Summary formula: C₁₆H₁₈ClN₃S - Molar mass: 319.85 g/mol - The structure contains a phenothiazine system with amine substituents and a chloride ion.

Ingredients:  distilled water, methylene blue (Ph. Eur.)

1 drop = 0.5 mg (methylene blue)

1 ml = 20 drops (10 mg of methylene blue) The production process uses pharmaceutical grade Methylene Blue - Ph. Eur.

- Blue glass bottle 100 ml with glass pipette -

ChemWorld Methylene Blue is an ultra-pure, pharmaceutical-grade form of Ph.Eur. Despite the supplier's testing, we verify these tests in a Polish laboratory. We always do this to ensure we deliver a product to our customers without impurities. Tests have shown no heavy metals or other contaminants.

Compliance with the requirements (Ph. Eur.) proves that our methylene blue is manufactured and tested to the highest standards, free from harmful contaminants and heavy metals such as lead, arsenic, cadmium and mercury.

Product advantages:

✅ Professional pipette - dropper

✅ Pharmaceutical purity grade Ph.Eur.

✅ Product tested in a Polish professional laboratory

✅ Correct solution recipe

✅ Laboratory-confirmed Methylene Blue content

✅ Laboratory-confirmed absence of heavy metals

We also verified in a Polish laboratory that our formula was correct and that customers were receiving exactly 1% methylene blue in an aqueous solution. The test showed that our methylene blue solution was no less than 1%, and even slightly above. This guarantees the declared potency.

Properties:

  • Solubility:  freely soluble in water and alcohols, forms an intense blue solution.         
  • PH dependence:  its color changes depending on the environment - in acidic solutions it takes on a cationic form (more intensely blue), and in alkaline solutions it can be reduced to a colorless leuco derivative.     

Reduction and oxidation:          

  • It can be reduced to methylene leucoblue, which is colorless, but reoxidizes to methylene blue upon contact with oxygen.
  • It acts as an electron acceptor and donor, which is why it is used as a redox indicator.      

Reactivity: 

  • In a reducing environment it can be transformed into methylene leucoblue, which is used in chemical reactions and biological research.
  • It can react with a variety of biological substances, such as proteins and nucleic acids, making it useful in microscopy and molecular biology.
  • It is relatively stable, but may degrade in the presence of strong oxidizing or reducing agents.     

Applications: 

  • Redox indicator – used e.g. in chemical analyses and biological tests. 
  • Biological dye – used in microscopy to stain preparations. 
  • Application in aquariums – used to color water. 
  • Fluorescence, exhibits fluorescent properties under certain conditions.

PRECAUTIONS:  If swallowed, do not induce vomiting; rinse mouth with water. Seek medical attention immediately. In case of contact with eyes, rinse with plenty of water and consult an ophthalmologist immediately. In case of skin contact, remove contaminated clothing and wash skin thoroughly with water. Immediately immerse contaminated clothing in water and rinse thoroughly.

STORAGE:  Store in a dry, dark and cool place, out of reach of small children.

ATTENTION !! THIS PRODUCT IS NOT A DRUG, THIS PRODUCT IS A CHEMICAL ANALYTICAL REAGENT FOR SYNTHESIS AND EDUCATIONAL PURPOSES, MAY BE HARMFUL TO HEALTH, ANY OTHER USE OF THE CHEMICAL REAGENT IS AT YOUR OWN RISK.

METHYLENE BLUE. THE COMPLETE GUIDE

Mark Sloan

  • WEIGHT: 0.27 KG
  • DIMENSIONS: 145 × 205 MM
  • CONDITION: NEW
  • NUMBER OF PAGES: 236
  • COVER: SOFT
  • ISBN: 978-83-65717-65-8
  • EAN: 9788365717658
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 15226490941

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J
Jennifer
Natrona Heights, US
★★★★★ 3
Disappointing results and poor adhesion.
I love Hydrocolloid pimple patches. I have used at least half of the brands available for sale and even the non brand ones. I’ve also used the hydrocolloid sheets and cut them to size and the hydrocolloid gel bandaids and used for pimple patches. I love how they help along the healing and keep me from picking at the pimple. This brand I wasn’t impressed by. None of them stayed on my face for half the night. The one that remained in place the longest out of the 4, didn’t show any signs of improvement. The longest they kept in place was 3 hours. I had to reapply and I still handbrake noticed any signs of healing after using one full sheet on 4 smaller sized blemishes because the adhesive wasn’t working.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
N
NK
Cuba, US
★★★★★ 5
Stops Me From Picking and Actually Works
As a woman in my 40s, I never would have guessed I’d still need pimple patches, yet the occasional zit still pops up — and these things are like magic. They work really well, blend into my fair/light skin nicely, and are barely noticeable at a quick glance. I’m also a terrible picker, and picking is so bad for your skin, so I love that these keep me from messing with pimples while doing all the work for me overnight. I’m always grossly fascinated by how much gunk they pull out by morning. Very happy to have these in my little skincare emergency arsenal.
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Reviewed in the United States on May 26, 2026
E
Elis
Waukegan, US
★★★★★ 5
Camouflages well with the skin and sticks long enough
I was excited to try these Halo Dot patches because I was having some breakouts before a wedding I had to attend. I put these on three nights before the wedding only at nights and left them on until the morning. I washed my face the 1st night, yet the second night I did not and it still attached (mind that I have a very oily face by the end of the day). With every application I saw good results as the breakouts were being reduced with each use. It is easy to put on and to carry out if you need to travel because it comes in two separate little envelope like package that you can put in a backpack/purse. These are thin and are almost not visible.
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Reviewed in the United States on May 14, 2026
B
Beachcomber
Phoenix, US
★★★★★ 4
Easy to Use and Surprisingly Effective
Even though I am well past the age when I thought breakouts would stop happening, I still get the occasional pimple. As luck would have it, I felt one starting to pop up on my cheek the day after these Halo Dot Pimple Patches arrived. Before bed, after washing and thoroughly drying my face, I applied one of the patches. It peeled easily from the backing sheet, and when I realized I had not placed it quite right, I was pleasantly surprised that I could lift and reposition it without any trouble. What really impressed me was how well it blended into my skin. I was only wearing it overnight, but honestly, I do not think anyone would have noticed it unless they were looking very closely. In fact, I forgot I even had it on until I looked in the mirror the next morning. The patch peeled off easily and had clearly pulled some of the buildup from the blemish overnight. There was no redness or irritation afterward, and the spot looked dramatically improved by morning. The only downside for me is the price, especially since the package contains just 33 patches. That said, if they continue to work this well, I would definitely consider purchasing them again.
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Reviewed in the United States on May 10, 2026
S
Summerr
Chelsea, US
★★★★★ 5
Love these already! Came in handy just when I need it!
These acne patches came in really handy when I had a random breakout near my lip, especially since that’s an area where I tend to wear a lot of makeup. They helped gently draw out impurities without being harsh on my skin. I also like that they blend in well on the skin. They’re not tinted, but they still work nicely across different skin tones like advertised, which makes them less noticeable while wearing them. You get a good amount in the package as well—33 patches total, with 18 patches on each sheet. Overall, they’re convenient to have on hand for unexpected breakouts, and I would definitely recommend them.
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Reviewed in the United States on May 18, 2026

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