| Customization: | Available |
|---|---|
| Type: | Inorganico |
| Appearance: | Powder |
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| Property | Details |
|---|---|
| Name | Acid - Base Test Agent / pH Indicator |
| Composition | Usually composed of organic weak acids or weak bases, such as phenolphthalein, methyl orange, bromocresol green, etc. Some test agents are mixtures of multiple indicators to achieve a wider pH detection range. |
| Appearance | Comes in various forms, such as liquid, solid powder, or test strips. Liquid indicators are usually clear solutions with different colors. Solid - state indicators are often powders, and test strips are strips of paper impregnated with indicator substances. |
| Principle of Action | Acid - base indicators are substances that change color at a certain pH, indicating the presence of an acid or base1. They are organic weak acids or bases, and their conjugate acid - base pairs have different structures and thus different colors8. When the pH of the solution changes, the indicator gains or loses protons, causing a change in its structure and thus a color change8. |
| pH Detection Range | Different indicators have different pH detection ranges. For example, phenolphthalein changes color in the pH range of 8.2 - 10.0, turning from colorless to pink; methyl orange changes color in the pH range of 3.1 - 4.4, turning from red to orange - yellow. |
Q1: Can I get some samples?
A: Yes, sure. Usually, we can provide free samples for less than 5 kg, but the customer needs to pay for the shipping.
Q2: What is your MOQ?
A: The minimum order quantity varies for different products, with most requiring a minimum of 1 ton. However, we can accommodate smaller quantities, such as 100kg, with a 100% sample charge.
Q3: How to confirm product quality before placing an order?
A: You can obtain free samples of the products, but you need to cover the shipping fee or arrange for the samples to be sent to us by express. Additionally, you can provide us with your product specifications and requirements, and we will manufacture the products accordingly.
Q4: Is there a discount for bulk purchases? How much is the discount?
A: Yes, we offer discounts for bulk purchases. The discount is determined by evaluating factors such as purchase volume, product type, and cooperation period. Generally, the larger the purchase volume, the greater the discount.
Q5: How do I start paying?
A: Payment can be made by wire transfer, Western Union, PayPal, Visa, Mastercard, T/T, Apple Pay, Google Pay, etc.
Q6: What is the shipping time?
A: We ship the products out within 1-3 days and provide a tracking number. Shipping time varies by country.
Q7: What qualifications and certifications does the company have? Such as ISO certification, etc.
A: Our supply manufacturers hold several authoritative certifications to ensure our products and services meet international standards and industry regulations. This includes the ISO 9001 Quality Management System certification, which indicates we have reached internationally recognized levels in product quality control, production process management, and continuous improvement, providing stable and reliable quality assurance for customers.
Q8: How about the after-sale service of products?
A: After purchasing products from our company, you will be supported by our professional technical team and after-sales team, who will help solve any problems you may encounter.
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