FISHER SCIENTIFIC 14-840 Litmus Paper Strips Congo Glass

( Brand: Fisher Scientific ), ( Part Type: Strip ), ( Color: Blue ), ( Manufacturer Part Number: 14-840 ), ( Country Of Origin: United States )

Review FISHER SCIENTIFIC Vintage Litmus Test Paper Strips Congo Blue Glass 100

The Fisher Scientific 14-840 Litmus Paper Strips, Congo Red, are an essential tool for determining the pH levels in various solutions. These paper strips are specifically designed with Congo Red indicator, which exhibits a distinctive color change in response to pH variations.

Each box contains 50 individually wrapped litmus paper strips, ensuring the freshness and accuracy of each strip. The strips are pre-calibrated, making them ready-to-use right out of the package. The pH range for these strips is 1.0 to 12.0, allowing them to cover a broad range of applications.

The Congo Red indicator turns pink in acidic solutions (pH 7). This clear color change makes it easy to read and interpret the results, even for those with little experience in pH testing. The strips are not affected by heavy metals or high ionic strength, making them suitable for a wide range of samples.

The Fisher Scientific 14-840 Litmus Paper Strips are ideal for use in various industries, including food and beverage production, pharmaceuticals, water quality testing, and environmental monitoring. They are compact and portable, making them convenient for use in the lab or in the field.

The strips are easy to use. Simply immerse the end of the strip in the solution to be tested for approximately 15-30 seconds, then compare the color of the strip to the pH color chart provided. The chart shows the correlation between the color of the strip and the corresponding pH value.

In conclusion, the Fisher Scientific 14-840 Litmus Paper Strips, Congo Red, offer an accurate, reliable, and easy-to-use method for determining pH levels in various solutions. Their wide pH range, clear color change, and resistance to heavy metals and high ionic strength make them a versatile tool for laboratories and industries alike.

Pros and Cons of Buying Fisher Scientific 14-840 Litmus Paper Strips (Congo Red)

a. Wide pH Range: Congo red litmus paper is suitable for determining pH levels between 4.5 and 6.5, making it ideal for various applications in laboratories, educational settings, and industrial processes.

b. Easy to Use: The strips are simple to use as they only require immersion in a liquid sample for a few seconds, and the color change provides a clear indication of the pH level.

c. Reliable and Consistent: Fisher Scientific is a trusted brand known for producing high-quality laboratory supplies. These litmus paper strips are consistent in their color change and provide accurate results.

d. Economical: The pack contains 100 strips, making it a cost-effective choice for frequent pH testing.

a. Limited pH Range: Congo red litmus paper is not suitable for testing pH levels outside the range of 4.5 to 6.5. For testing other pH levels, different types of litmus paper need to be used.

b. Short Shelf Life: Once opened, the litmus paper strips need to be used within a few months to ensure accurate results. Proper storage in a cool, dry place can help extend their shelf life.

c. Handling Precautions: Congo red litmus paper may contain heavy metals, so proper handling precautions should be taken to prevent exposure.

The Fisher Scientific 14-840 Litmus Paper Strips (Congo Red) offer several advantages, such as wide applicability, ease of use, reliability, and cost-effectiveness. However, they have some limitations, including a limited pH range and a short shelf life. If the pH range of 4.5 to 6.5 suits your requirements and you can adhere to proper handling precautions, then these litmus paper strips are a great choice for your laboratory or educational needs.

If you frequently need to test pH levels within the range of 4.5 to 6.5, the Fisher Scientific 14-840 Litmus Paper Strips (Congo Red) are an excellent choice due to their ease of use, reliability, and cost-effectiveness. However, if you require pH testing outside this range, consider investing in other types of litmus paper or alternative pH testing methods.

Details:

Made in the USA, these strips provide a reliable and accurate method for detecting presence of Congo BLUE different samples. These strips are designed to test for the presence of Congo BLUE dye, typically used in laboratory settings various industrial and healthcare applications. The product is a vintage litmus test paper strips Congo BLUE manufactured by Fisher Scientific.

part #: 14840 prices

• $8.99-$11.03

specifications quakedental:

• brand: Fisher Scientific
• part type: Strip
• color: Blue
• manufacturer part number: 14-840
• country of origin: United States

seller quakedental:

• # reviews: 378
• rating: 100.0%
• city: Castle Rock, Colorado

offer quakedental:

• best offers: True
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: December 31, 2025
• availability: In Stock

general quakedental:

• Business Industrial > Healthcare, Lab Dental > Other Healthcare, Lab Dental
• condition: Used

payments quakedental:

• credit card: Discover
• other
• wallet: Google-pay

shipping quakedental:

• carrier: USPS
• type: Calculated
• transit: 5-10 Days
• class: Standard
• service: USPS Ground Advantage
• cost: $7.67

returns quakedental:

• policy: No Returns

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