Alizarin Extra Pure

Original price was: $ 25.00.Current price is: $ 24.54.
Alizarin Extra Pure is a high-grade anthraquinone-based dye, presented as a reddish-brown crystalline powder, renowned for its vivid coloration and strong affinity for metal ions. It is primarily used in analytical chemistry as a complexometric indicator, especially for detecting aluminum, calcium, and other metal ions through color change. Due to its exceptional purity, it is also employed in histological staining, textile research, and pigment synthesis where precision and consistency are critical. Alizarin Extra Pure offers excellent stability and intense coloration, making it ideal for scientific, educational, and specialized industrial applications. Proper storage in a cool, dry environment is essential to maintain its effectiveness and prevent degradation.

Bicarbonate Indicator Extra Pure

Original price was: $ 17.00.Current price is: $ 16.45.
Bicarbonate Indicator Extra Pure is a high-purity, specially formulated solution used in laboratory settings to detect and monitor changes in bicarbonate ion concentration, particularly in biological and environmental experiments. It typically contains a pH-sensitive dye that changes color in response to shifts in carbon dioxide or bicarbonate levels, making it valuable in studies of respiration, photosynthesis, and water quality. This indicator is often employed in teaching labs to visually demonstrate gas exchange or acid-base balance. The extra pure grade ensures consistent performance, color clarity, and minimal background interference in precise analytical work. It should be stored in a cool, dark place in a tightly closed container to maintain its sensitivity and stability.

Bromothymol Blue Extra Pure

Original price was: $ 18.00.Current price is: $ 17.00.
Bromothymol Blue Extra Pure is a high-purity pH indicator dye widely used in laboratory experiments, especially in acid-base titrations and biological research. It exhibits a distinct color change from yellow in acidic solutions (pH < 6.0) to blue in basic conditions (pH > 7.6), making it valuable for monitoring pH changes in aqueous systems. This dye is also employed in respiratory experiments to detect CO₂ levels through pH shifts. The extra pure grade ensures excellent color stability, high sensitivity, and minimal impurities, making it suitable for precise analytical and educational applications. It should be stored in a tightly closed container, protected from light and moisture to maintain its integrity.

Cresol Red Indicator Extra Pure

Original price was: $ 18.00.Current price is: $ 17.43.
Cresol Red Indicator Extra Pure is a high-purity pH indicator dye widely used in laboratory titrations, buffer solutions, and biochemical assays. It exhibits a clear color change from yellow to red over the pH range of approximately 7.2 to 8.8, making it suitable for detecting slight pH shifts in weakly basic environments. Its stable performance and extra pure grade ensure consistent results in analytical chemistry, molecular biology, and spectrophotometric applications. Ideal for use in precise pH monitoring, Cresol Red should be handled with care and stored away from light and moisture to preserve its integrity.

Litmus Granular Extra Pure

Original price was: $ 18.00.Current price is: $ 17.67.
Litmus Granular Extra Pure is a premium-grade pH indicator widely used in laboratories for acid-base testing and educational demonstrations. Derived from natural sources like lichens, this granular form offers a stable, easy-to-handle format suitable for preparing litmus solutions or impregnating test papers. In acidic environments, it turns red, while in alkaline conditions, it turns blue, providing a clear visual response. Its high purity ensures reliable and repeatable results across various applications in chemistry, biology, and environmental testing. Store in a tightly sealed container away from moisture and direct sunlight to preserve its effectiveness.

Litmus Solution Extra Pure

Original price was: $ 18.00.Current price is: $ 17.43.
Litmus Solution Extra Pure is a high-quality, ready-to-use pH indicator solution designed for precise acid-base testing in laboratories and educational settings. Made from purified natural litmus dye, it changes color distinctly—red in acidic solutions and blue in alkaline solutions—making it an essential tool for quick and accurate pH assessments. Its extra pure formulation ensures consistent performance, clear color transitions, and reliability in analytical chemistry, biology experiments, and environmental monitoring. Ideal for titrations and classroom demonstrations, this solution should be stored in a cool, dark place to maintain stability and color accuracy.

Methyl Orange Disodium Salt Extra Pure

Original price was: $ 18.00.Current price is: $ 17.63.
Methyl Orange Disodium Salt Extra Pure is a high-purity pH indicator commonly used in titrations and analytical chemistry to determine acidity levels. It exhibits a sharp color change from red in acidic environments to yellow in alkaline conditions, typically within the pH range of 3.1 to 4.4. This disodium salt form ensures excellent solubility in water, making it especially reliable for use in aqueous solutions. Its stability and sensitivity make it ideal for laboratory applications involving strong acid–base reactions, particularly in titrations of mineral acids. Methyl Orange Disodium Salt Extra Pure is a trusted choice for consistent and accurate results in both educational and professional lab settings.

Methyl Orange Solutions Extra Pure

Original price was: $ 15.00.Current price is: $ 14.78.
Methyl Orange Solutions Extra Pure is a ready-to-use, high-grade pH indicator solution widely utilized in acid-base titrations and general analytical chemistry. Known for its distinct and sharp color transition—from red in acidic environments to yellow in alkaline conditions—it provides rapid and clear visual cues for end-point detection. This extra pure formulation ensures maximum accuracy, reliability, and reproducibility in laboratory settings. It is especially effective in titrations involving strong acids and weak bases, commonly used in educational, research, and industrial labs. The solution is precisely prepared to standardized concentrations, eliminating the need for dilution or mixing, and is ideal for professionals seeking precision and ease of use.

Methyl Red Extra Pure

Original price was: $ 16.00.Current price is: $ 15.87.
Methyl Red Extra Pure is a high-grade pH indicator commonly used in analytical chemistry, especially in titration processes to identify the endpoint between acidic and basic solutions. It exhibits a clear color change from red in acidic environments (pH below 4.4) to yellow in alkaline conditions (pH above 6.2), making it ideal for monitoring pH transitions in laboratory procedures. Beyond titrations, it is also used in microbiological media to distinguish between types of bacterial metabolism. This extra pure quality ensures excellent sensitivity, precision, and reliability in both educational and professional scientific settings.

Methyl Red Solution Extra Pure

Original price was: $ 19.00.Current price is: $ 18.89.
Methyl Red Solution Extra Pure is a ready-to-use, high-purity pH indicator solution widely used in laboratories for acid-base titrations and biochemical assays. It changes color from red at pH below 4.4 to yellow above pH 6.2, making it highly effective in detecting pH shifts with clear visual transitions. This solution is particularly valuable in analytical chemistry, microbiology (such as the methyl red test in bacterial identification), and educational experiments. Its extra pure grade ensures consistent performance, high accuracy, and minimal impurities, making it suitable for precise scientific applications.

Neutral Red Solution Extra Pure

Original price was: $ 17.00.Current price is: $ 16.78.
Neutral Red Solution Extra Pure is a high-purity, ready-to-use solution of the pH indicator dye Neutral Red, widely employed in biological, biochemical, and analytical laboratories. Known for its distinct color change—red in acidic environments and yellow in alkaline—it is commonly used to stain lysosomes in viable cells, making it invaluable in cell viability assays, cytotoxicity studies, and microscopic cell structure investigations. This Extra Pure grade ensures excellent clarity and precision in results, especially in sensitive microbiological and histological procedures. It is frequently used in conjunction with culture media to observe metabolic activities and in vital staining techniques to differentiate between live and dead cells. Proper handling involves storing it in tightly sealed amber containers away from light and heat to maintain its stability and effectiveness.

Phenol Red Extra Pure

Original price was: $ 18.00.Current price is: $ 17.80.
Phenol Red Extra Pure is a highly refined pH indicator dye widely used in biological and chemical laboratories. Appearing as a reddish crystalline powder, it changes color based on pH—yellow in acidic environments (pH < 6.8), red in neutral to slightly basic conditions (around pH 7.4), and fuchsia in more alkaline solutions (pH > 8.2). This Extra Pure grade is particularly suited for cell culture media, where it helps monitor pH fluctuations during cell growth and metabolic activity. It is also employed in analytical chemistry, water quality testing, and titrations. Phenol Red is stable under normal storage conditions but should be kept in a dry, tightly sealed container away from strong acids or bases. Proper lab safety protocols—such as wearing gloves and goggles—are recommended when handling the powder or concentrated solutions.

Phenolphthalein Powder Extra Pure

Original price was: $ 19.00.Current price is: $ 18.98.
Phenolphthalein Powder Extra Pure is a high-purity pH indicator extensively used in analytical chemistry and laboratory applications. This fine, white to pale pink crystalline powder is colorless in acidic solutions but turns a vivid pink to deep magenta in basic environments, typically transitioning around a pH of 8.2 to 10.0. Its sharp and distinct color change makes it ideal for acid-base titrations, particularly in educational, industrial, and research settings. In addition to its primary role in titrations, Phenolphthalein is also used in various chemical formulations, soil pH testing, and sometimes as a dye component in forensic applications. Although previously used as a laxative, it is now restricted to laboratory use due to health concerns. It should be handled with care—using gloves, protective eyewear, and in well-ventilated areas—to avoid inhalation or prolonged contact. Store in a cool, dry place, away from strong oxidizers and light.

Phenolphthalein Solution Extra Pure

Original price was: $ 9.00.Current price is: $ 8.92.
Phenolphthalein Solution Extra Pure is a laboratory-grade pH indicator solution, commonly used in titration procedures to determine the endpoint of acid-base reactions. It is prepared by dissolving phenolphthalein powder in an appropriate solvent, typically ethanol or water-alcohol mixtures, resulting in a clear, colorless solution that turns vivid pink in basic conditions—usually in the pH range of 8.2 to 10.0. This high-purity solution offers excellent sensitivity and reliability for analytical chemistry, quality control, and educational demonstrations. It is especially favored in alkalinity testing, neutralization reactions, and various standard laboratory protocols. Proper handling is essential, including the use of gloves and eye protection, as the solution may cause skin or eye irritation upon contact. Store tightly sealed, away from direct light and incompatible substances like strong acids or oxidizers, to maintain its stability and effectiveness.

Thymoil Blue Extra Pure

Original price was: $ 19.00.Current price is: $ 18.90.
Thymoil Blue Extra Pure is a dual-range pH indicator and high-grade analytical reagent used extensively in laboratories for acid-base titrations, buffer preparation, and spectrophotometric measurements. It offers vivid and distinct color changes over two pH ranges, making it highly valuable for both quantitative analysis and educational demonstrations. This Extra Pure grade ensures minimal impurity and consistent behavior in sensitive experimental settings. Thymol Blue should be stored in a dry, cool, and dark environment to preserve its reactivity and accuracy.