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Black-and-white grid paper (half black, half white; black and white; twill)

Name: Black-and-white grid paper (half black, half white; black and white; twill)
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

The opacity‑determination cardstock (black-and-white paper) is manufactured in accordance with GB/T 1726‑89 and is primarily used to assess the opacity of coatings. The coating is applied to the test cardstock at the specified thickness; after the coating film has dried, a reflectance meter is used to measure the reflectance values against black and white backgrounds. The higher the ratio of these two values, the greater the opacity.

Category:

Paint, Coating Film, and Coating Testing Instruments

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E-mail:

lbt@lbt.ltd

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+86-15102211717

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Black-and-white grid paper (half black, half white; black and white; twill)

Description

Product Introduction

It is primarily used to determine the hiding power of coatings. The coating is applied to a test card at the specified thickness; after the coating film has dried, a reflectance meter is used to measure the reflectance values against black and white backgrounds. The higher the ratio of these two values, the greater the hiding power.

Technical Specifications:

1. Black reflectance: く1

2. White reflectance: 80 ± 2

3. 1# Twill Paper

External dimensions: 260 mm x 145 mm

Packaging: 100 sheets per pack

Weight: 1.2 kg

4. 2# Half-black, half-white paper

External dimensions: 250 mm x 140 mm

Packaging: 100 sheets per pack

Weight: 1.2 kg

5. 3# Black-and-White Grid Paper

External dimensions: 250 mm x 100 mm

Packaging: 100 sheets per pack

Weight: 1 kg

6. 4# Small half-black, half-white paper

External dimensions: 150 mm x 100 mm

Packaging: 100 sheets per pack

Weight: 0.5 kg

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

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