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Bromocresol green is a pH indicator dye commonly used in laboratory settings to measure the acidity or basicity (pH) of a solution. It changes color depending on the pH level of the environment:
In acidic conditions (pH < 3.8), it appears yellow.
In neutral conditions (pH 4.0 - 5.4), it transitions to a green color.
In basic conditions (pH > 5.4), it turns blue.
This indicator is often used in titrations, biological research, and even in clinical applications to assess pH changes in body fluids or cultures.
Items | Specifications | Results |
PH color change range | 3.8(olivine)—5.4(blue) | 3.8(olivine)—5.4(blue) |
maximum absorption wavelength(nm) λ1(PH 3.8) λ2 (PH 5.4) | 440~445 615~618 | 443 618 |
mass absorption coefficient,L/cm.g α1(λ1PH 3.8,干样) α2(λ2PH 5.4,干样) | 24~28 53~58 | 25.5 55.5 |
Ethanol dissolution test | Conforms | Conforms |
Residue on Ignition | ≤0.25 | 0.1 |
Loss on Drying | ≤3.0 | 1.0 |
Conclusion | The result conform to the Specification | |
Bromocresol green has several important applications, particularly in fields where monitoring or testing pH is critical. Some of its key applications include:
Bromocresol green is widely used as a pH indicator in acid-base titrations. It helps determine the endpoint of the titration, especially when titrating weak acids or weak bases.
Blood Serum and Plasma pH: Bromocresol green is used to measure serum albumin levels in clinical diagnostics. Albumin binds to the dye, and the resulting color change can be used to determine albumin concentration in blood samples.
Urine pH Testing: It can also be used in urine testing strips to measure the pH of urine, which can provide insights into health conditions like kidney problems or urinary tract infections.
Bromocresol green is used in microbiological studies to monitor the pH of microbial growth media. Changes in pH during microbial fermentation or growth can affect the color of the indicator, giving researchers a quick way to assess changes in the environment.
Due to its clear color changes across the pH spectrum, bromocresol green is often used in chemistry classrooms and educational settings to demonstrate acid-base reactions and the concept of pH indicators.
In environmental science, Bromocresol green can be used to monitor the pH of water in testing for pollution or in the management of aquariums, wastewater treatment plants, and other aquatic systems.
Bromocresol green is sometimes used in laboratory experiments to study the binding of proteins, especially in the case of serum albumin. It can be used to estimate protein concentration based on its interaction with the protein.
Overall, the main application of Bromocresol green lies in its role as a pH indicator, providing an easy-to-read visual cue in both analytical and clinical settings.

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FAQ From Wuhan Fortuna Chemical Co.,Ltd
Q1: Can I get a sample for free ?
A: For small QTY and low value product, we can provide sample for free exclude shipping cost. For high value sample, we will charge the basic sample cost, but we can refund all the cost if customers place order after sample test.
Q2: How to confirm the product quality before placing orders ?
A: Most of our products confirm to international standards like USP/EP/BP/JP/CP. We will provide COA/TDS/MSDS for customers to confirm the specification before placing order.
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A: For small and low value order, we accept CreditCard, MaterCard,VISA,Western Union and T/T.For large order, we can do T/T and L/C. Any pay on delivery or pay-after are not available for us.
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A: For less than 100kg gross weight order will ship with courier like FedEx or UPS, we support customers to place courier orders remotely by their account, we will package the goods well and wait for pick up.For more than 100kg goods, we will transport by Air or Sea according to customers' requirement.
Q5: How long is your after-sales service?
A: We accept customer’s quality complaint in three month after customer received the goods. We provide tech.support for all-life if customer place order from our company.
Q6: How do you treat quality complaint ?
A: We support customer to provide our products to any rightful third party testing organization to test our products according to the COA specification, if the test result is confirm with COA, we will take all the loss for customers.




Name:Wuhan Fortuna Chemical Co.,Ltd
Category:Others
Trade Category: Trading Company
Employees: 11 - 50 People
Address: Room 2015, No.2 Building, Kaixin Mansion No.107
Company Information: Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical and Intermediates, Food and Feed additives, Fine chemicals,Biochemical and Reagent, which is the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients' requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward power, their satisfaction is our struggling goal.
Wuhan Fortuna Chemical Co.,Ltd is a professional manufacturer which provide Azaperone with good quality and best price, welcome to contact us to get COA/TDS/MSDS of Azaperone.
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