What is the difference between qualitative and quantitative filter paper?

Qualitative filter paper has high ash content and is used for qualitative analysis. Quantitative filter paper has very low ash content suitable for gravimetric analysis.

What are the pore sizes for different speeds?

Fast speed is 80-120um, medium speed is 30-50um, and slow speed is 1-3um.

Lab Oil Filter Paper Fast Medium Slow Speed Qualitative Filter Paper Diameter 7cm

Name: Lab Oil Filter Paper Fast Medium Slow Speed Qualitative Filter Paper Diameter 7cm
Brand: Hunan BKMAM International Trade Co., Ltd.
SKU: 2037177155

Hunan, ChinaHunan BKMAM International Trade Co., Ltd.

US$0.45

100-999 Bags

US$0.42

1,000+ Bags

Sample price:US$0.20/piece.Request sample

Product profile

Customization

Available

Material

Cotton Pulp

Usage

Liquid Filter, Powder Filter, Solid Filter

Model NO.

110416005

Thickness

0.91-1.2mm

Basic Weight

<100g/m²

Corrugation Depth

0.35mm

Resin Content

10%-15%

Type

Qualitative

Color

White

Product Name

Qualitative Filter Paper

Material Type

Cotton Fiber

Product Color

Natural White

Shape

Round Circle Filter Paper

Diameter

7cm, 9cm 12.5cm, 15cm, 18cm

Filtration Speed

Fast, Medium, Slow Speed Available

Package

100 Circles/Box

Product Advantage

Weak Acid and Alkali Resist

Production Environment

100, 000 Level Purification Workshop

Stock

Yes, Stock Available

MOQ

1 Carton

Sample Policy

Sample Free of Charge

Application

Laboratory Sample Storage and Transfer

Transport Package

5 Layer Cardboard Carton

Specification

7cm to 18cm

Trademark

BKMAM

Origin

Hunan, China

HS Code

3926909090

Production Capacity

200000PCS/Day

Key features

Multiple Filtration Speeds: Fast, medium, and slow speed options available with specific pore sizes.

Wide Diameter Range: Available in 7cm, 9cm, 11cm, 12.5cm, 15cm, and 18cm sizes.

High Purity Material: Made from high-quality cotton fiber washed in hydrochloric acid.

Acid and Alkali Resistant: Designed to resist weak acid and alkali environments effectively.

ISO 9001 Certified: Manufactured under strict quality control with ISO 9001 certification.

Free Sample Policy: Samples are available free of charge with delivery address provided.

Fast Stock Delivery: Stock items are shipped within 48 hours via express courier.

OEM Service Available: Customized OEM orders are welcome for bulk production needs.

Company profile

Hunan BKMAM International Trade Co., Ltd.

Hunan, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2019-06-08Nearest Port: shanghai, guangzhouAverage Response Time: ≤5.61hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF

AI-Powered supplier vetting

SummaryChangde BKMAM Biotechnology Co., Ltd. is associated with Hunan BKMAM International Trade Co., Ltd. and is described as both a trading company and manufacturer/factory in China. The supplier develops and manufactures laboratory consumables, with production and storage facilities exceeding 42,000 square meters, more than 40 production lines, and a 26,000-square-meter purification workshop. It reports ISO 9001, GMP, CE, and FDA certifications, supported by over 50 R&D personnel, 21–30 quality-control staff, and more than 10 patents. The company provides OEM and ODM services and has independent import-export rights, exports to multiple global regions, and reports lead times within 15 working days in both normal and peak seasons. Evidence confirms production, certification, R&D, customization, and after-sales activities, but does not provide specific customer cases or sufficient information to assess financial credibility.

Supplier typeThe supplier is identified as a biotechnology company specializing in laboratory consumables and is described as both a trading company and manufacturer/factory. Its operations include R&D, manufacturing, sales, and after-sales services, with locations and facilities in Hunan, China.

CertificationsThe supplier reports ISO 9001 and GMP management or production certifications, while its company description also states CE and FDA certification. These certifications directly support formal quality and regulated-product management capabilities.

After-Sales capabilityAfter-sales service is explicitly included among the company’s operations, and the supplier states that it aims to provide high-quality products and services. However, no details are provided on service processes, response times, warranty terms, or service coverage.

R&D capabilityThe supplier reports an R&D team of more than 50 people, cooperation with leading Chinese universities, more than 10 invention and utility model patents, and 11–20 years of total R&D engineer experience. It also states that product innovation and optimization are based on scientific research needs, providing explicit evidence of innovation capability.

Production capacityProduction capability is supported by a 26,000-square-meter purification workshop, production and storage bases exceeding 42,000 square meters in total, more than 40 production lines, and over 10 operating production lines. The supplier reports order fulfillment within 15 working days during both off-peak and peak seasons, indicating substantial stated capacity and scheduling capability.

Customization capabilityThe supplier explicitly states that it can undertake OEM and ODM orders and is classified as both a trading company and manufacturer/factory. This directly supports the ability to provide customized or customer-branded products, although no specific customization examples or technical limits are given.