logo
chat

Chat
Online

chat

Inquiry

chat

Email

chat
Home > laboratory safety

laboratory safety

Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.

Why choose us

Solutions to meet different needs

Solutions to meet different needs

We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.

Highly specialized team and products

Highly specialized team and products

Professional team work and production line which can make nice quality in short time.

We trade with an open mind

We trade with an open mind

We abide by the privacy policy and human rights, follow the business order, do our utmost to provide you with a fair and secure trading environment, and look forward to your customers coming to cooperate with us, openly mind and trade with customers, promote common development, and work together for a win-win situation.

24 / 7 guaranteed service

24 / 7 guaranteed service

The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems

Certificate of honor


CONTACT USCustomer satisfaction is our first goal!

Consultation hotline:0086-15900663312

Address:No. 3888, Hutai Road, Baoshan District, Shanghai, China

laboratory safety

Cement Industries Inc.

Cement Industries Inc.

transmitted through a floor system. The larger the ,value, of the STC for a given system, the greater the ,sound insulation,. The Impact ,Insulation, Class is the resistance to impact noise 6" SPANCRETE 50 ,SOUND, TRANSMISSION CLASS (STC) As with the STC, the higher IIC ,values, are more desirable. Refer to the PCI Design Handbook

Get Price
Empirical calculation of sound insulation in lightweight ...

Empirical calculation of sound insulation in lightweight ...

dicted ,values, to the measured results. Our prediction is based on equations in the European Standard EN 12354-1 and well-known empirical models, with empirical corrections from the measurements. Articles have also provided us with both guidance on how to calculate the ,sound insulation, and simplified methods for handling uncertainties and safety

Get Price
Earmuffs | PPE | 3M Worker Health & Safety | 3M United States

Earmuffs | PPE | 3M Worker Health & Safety | 3M United States

This welding ,earmuff, features a low-profile design that fits comfortably under most welding helmets, as well as a semi-soft cup surface that minimizes scratch ,sound, transmission. With a two-point suspension for balanced pressure distribution, this advanced ,earmuff, delivers the comfortable hearing protection that professionals need in a wide range of welding environments.

Get Price
Is the soundproof earplug useful?-SUNLAND

Is the soundproof earplug useful?-SUNLAND

Good products have an ,average sound insulation value, between 36-40 decibels in various frequencies, and some products have a maximum ,sound insulation value, of 50 decibels, which can isolate 80 to 90% of ambient noise.

Get Price
Typical U Values for Walls | Insulation Specialists | Home ...

Typical U Values for Walls | Insulation Specialists | Home ...

As you can see, on their own without added ,insulation,, cavity walls have a better U ,value, than solid walls. Typical U ,Values, for Walls. Below are the typical U ,values, you’d expect to measure within a solid wall, an uninsulated cavity wall, and an externally insulated wall of any …

Get Price
6.2 Building insulation envelope

6.2 Building insulation envelope

In the majority of cases however, after an alteration of this nature to the ,insulation, envelope, a roof should be able to achieve at least an ,average, U-,value, of 0.35 and in the case of a …

Get Price
FAQ Frequently Asked Questions | ROCKWOOL

FAQ Frequently Asked Questions | ROCKWOOL

Sound, “loudness” is measured in decibels [dB]. ,Sound, frequency is the number of vibrations caused by the ,sound, per unit time. The amount of ,sound, decreased is expressed as an STC rating which is a measure of a material’s or an assembly’s ability to resist ,sound, transfer.

Get Price
The 5 Best Noise Reduction Earmuffs Review - NoisyWorld

The 5 Best Noise Reduction Earmuffs Review - NoisyWorld

After prolonged use, the ear cushions of any ,earmuffs, will wear out and the ,insulation, foam inside the cups can get dirty or deteriorate. Both the ear cushions and the ,insulation, foam are user-replaceable and readily available for purchase in a hygiene kit.

Get Price
Understanding the R- and U-Values of Insulation

Understanding the R- and U-Values of Insulation

1/6/2008, · A standardized ,insulation, rating system ensures consistency, with insulating materials rated in R- and U-,values,. R-,values, represent resistance to the flow of heat; the higher the R-,value,, the greater the resistance and the insulating ,value,. U-,values, are the direct opposite, representing the amount of heat that escapes through a material.

Get Price
Understanding Acoustic Ratings: STC vs RW | Aluglass

Understanding Acoustic Ratings: STC vs RW | Aluglass

Fortunately a series of ratings have been developed to help make sense of ,sound insulation,. ... (such as glass) and 30s (the ,average, wall). Effective ,sound insulation, appear at STCs around the 50s. STC testing standards are always updated, ... STC ,values, are around 3-4 dB higher for the equivalent ,sound insulation, in Rw.

Get Price
Best Earmuffs For Sleeping In 2020 - TOP 10 Best Reviewed

Best Earmuffs For Sleeping In 2020 - TOP 10 Best Reviewed

It has powerful ,sound insulation, and noise-canceling capabilities. It offers up to 27 NRRs. Such headphones can easily have 34dB ,of earmuffs,, but they are not because the headband was designed to put less effect on your ears for lasting comfort.

Get Price
Best Earmuffs For Sleeping In 2020 - TOP 10 Best Reviewed

Best Earmuffs For Sleeping In 2020 - TOP 10 Best Reviewed

It has powerful ,sound insulation, and noise-canceling capabilities. It offers up to 27 NRRs. Such headphones can easily have 34dB ,of earmuffs,, but they are not because the headband was designed to put less effect on your ears for lasting comfort.

Get Price
Recommended Home Insulation R–Values - Energy Star

Recommended Home Insulation R–Values - Energy Star

Recommended Home ,Insulation, R–,Values,. ,Insulation, level are specified by R-,Value,. R-,Value, is a measure of ,insulation,’s ability to resist heat traveling through it. The higher the R-,Value, the better the thermal performance of the ,insulation,. The table below shows what levels of ,insulation, are cost-effective for different climates and ...

Get Price
Empirical calculation of sound insulation in lightweight ...

Empirical calculation of sound insulation in lightweight ...

dicted ,values, to the measured results. Our prediction is based on equations in the European Standard EN 12354-1 and well-known empirical models, with empirical corrections from the measurements. Articles have also provided us with both guidance on how to calculate the ,sound insulation, and simplified methods for handling uncertainties and safety

Get Price
What do Rw Ctr and NRC mean? | BUILD

What do Rw Ctr and NRC mean? | BUILD

The higher the Rw/Rw+Ctr ,values, of a ,sound insulation, product, the better the product will perform as soundproofing. NRC ,values, on room finishes will contribute to the ,sound, landscape too; higher ,values, will ‘deaden’ the ,sound, in a room, lessening the reverberation of …

Get Price
Best Shooting Ear Protection – | Top 10 REVIEWS – Nov 2020

Best Shooting Ear Protection – | Top 10 REVIEWS – Nov 2020

NRR ,Value, of 30 dB: When external ambient ,sound, reaches 82 dB, this device will shut off amplification automatically. However, the R-01902 model has 30 dB Noise Reduction Rating ,value, that supports natural listening and communication.

Get Price
FAQ Frequently Asked Questions | ROCKWOOL

FAQ Frequently Asked Questions | ROCKWOOL

Sound, “loudness” is measured in decibels [dB]. ,Sound, frequency is the number of vibrations caused by the ,sound, per unit time. The amount of ,sound, decreased is expressed as an STC rating which is a measure of a material’s or an assembly’s ability to resist ,sound, transfer.

Get Price
What Is the Noise Reduction Rating (NRR) and How to Use It?

What Is the Noise Reduction Rating (NRR) and How to Use It?

The NRR is then calculated from the means (using two standard deviations) in this attenuation table, assuming pink noise with a ,sound, level of 100 dB at each frequency. Note that while the ,earmuffs, and earplugs in the example above have almost the same noise reduction rating, there is a marked difference between the two at different frequencies.

Get Price
Earplug & Noise Reduction Ratings Explained

Earplug & Noise Reduction Ratings Explained

In all cases where the ,sound, levels exceed the ,values, shown below, a continuing, effective hearing conservation program should be administered. For a better grasp of industry standards, here are a few of the most common producers of noise levels that OSHA considersto be dangerous: lawnmowers, rock concerts, firearms, firecrackers, headset listening systems, motorcycles, tractors, power tools ...

Get Price
What do Rw Ctr and NRC mean? | BUILD

What do Rw Ctr and NRC mean? | BUILD

The higher the Rw/Rw+Ctr ,values, of a ,sound insulation, product, the better the product will perform as soundproofing. NRC ,values, on room finishes will contribute to the ,sound, landscape too; higher ,values, will ‘deaden’ the ,sound, in a room, lessening the reverberation …

Get Price