Does this product support customization?

Yes, we offer full customization, minor customization, and customization from samples or designs.

What are the payment terms for this product?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

What is the minimum order quantity?

The minimum order quantity is 1 set.

Calibration Point 4.01 6.86 9.18 pH Buffer Powder pH Test Meter Test Measure Calibration Solution

Name: Calibration Point 4.01 6.86 9.18 pH Buffer Powder pH Test Meter Test Measure Calibration Solution
Brand: Zhengzhou Wollen Instrument Equipment Co., Ltd.
SKU: 796895202

Henan, ChinaZhengzhou Wollen Instrument Equipment Co., Ltd.

US$0.30-0.90

10 Sets

Product profile

Customization

Available

Portable

Appliance

Food Analysis, Medical Research, Biochemistry

Certification

ISO9001, CE

Name of Commodity

pH Buffer Powder

Product Standard

Bagged Powder

Weight

About 3G Each Bag

pH Value

4.01, 6.86 and 9.18

Proportion

250ml Standard Solution Per Bag

Expiration Date

Two Years

Transport Package

Carton Box

Specification

3g/bag

Trademark

WollenLab

Origin

China

HS Code

2835299000

Production Capacity

1000sets/Month

Key features

Multi-Point Calibration: Supports 4.01, 6.86, and 9.18 pH values for accurate probe calibration.

Long Shelf Life: Unopened powder lasts two years; opened solution usable for 3-6 months at 4-16C.

Versatile Applications: Ideal for food analysis, medical research, and biochemistry testing.

High Accuracy: Ensures electronic pH measurement probes maintain precision during long-term use.

Flexible Customization: Offers full, minor, and sample-based customization options for specific needs.

ISO9001 & CE Certified: Product meets international quality and safety standards for reliability.

Convenient Packaging: Bagged powder format with 3g weight per bag for 250ml standard solution.

Rapid Delivery: Average lead time within 15 workdays for both peak and off-peak seasons.

Company profile

Importers and ExportersFast DeliveryCustomization from SamplesOEM Services

Zhengzhou Wollen Instrument Equipment Co., Ltd.

Henan, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.78h

AI-Powered supplier vetting

SummaryWollen is a limited company with expertise in laboratory instrument production, focusing on customization and export, mainly to markets outside China. While it offers ODM and OEM services, it lacks a strong R&D and innovation presence, as no new products were developed recently. The company has no overseas presence and does not participate in trade shows, which could limit its exposure. Financial data is available for recent years, though details on credibility are sparse. Despite the absence of after-sales service records and a small workforce, Wollen maintains a broad export reach and a flexible customization capability.

Supplier typeWollen is a limited company not part of a larger company group, with a focus on laboratory instruments.

After-Sales capabilityThe supplier lacks written procedures or records for handling customer complaints and corrective actions.

R&D capabilityThe supplier focuses on innovation in product offerings but did not introduce new products recently.

Customization capabilityWollen offers extensive customization options including ODM and OEM services, highlighting strong customization capability.

Product Q&A

Q:What is the shelf life of the buffer powder?

Unopened powder has an expiration date of two years. Once opened, the solution should be used within 3-6 months when stored at 4-16C.

Q:How often should I calibrate my pH meter?

If the meter is in constant use, calibrate once a week. For normal frequency use, calibration is needed approximately every 3 months.

Q:What are the available pH values for this buffer powder?

The product provides calibration points at pH 4.01, 6.86, and 9.18.

Q:How do I prepare the calibration solution?

Each bag contains about 3g of powder which is mixed with 250ml of water to create a standard solution.

Q:What is the recommended calibration procedure?

Wash the electrode with pure water, immerse it in the solution, and adjust the meter. Start with 6.86, then use 4.01 or 9.18. Wipe the electrode between steps to avoid contamination.