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Our service

Centre Testing International Co., Ltd. (CTI) is the pioneer and leader in the TIC Industry which provides one-stop solutions on testing, inspection, certification, calibration, audit, training & technical services.

 
By Industry

Our service capabilties cover the upstream and downstream of the supply chain including textile and apparel,toys,electronic appliances,medical health,food...andother industries.
Specialty

Comprehensively guarantee quality and safety, promote compliance and innovation, demonstrate brand competitiveness, and achieve higher quality, healthier, safer, and greener sustainable development.
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WELL Building Performance Verification

As an IWBI-recognized WELL performance testing provider (PTP), CTI provides professional on-site performance verification (PV) for WELL project applicants, consulting firms, and various material suppliers. These services cover on-site testing and laboratory analysis for air quality, water quality, lighting environment, thermal comfort, and acoustic environment. Our PV results can serve as certification evidence for WELL certification.

WELL Building Performance Verification

Service Background

As the world's first building certification standard focused on enhancing human health and well-being through indoor environments, the WELL Building Standard was introduced by Delos and is managed by the International WELL Building Institute (IWBI). This standard contains ten core concepts—Air, Water, Nourishment, Light, Movement, Thermal Comfort, Sound, Materials, Mind, and Community—providing comprehensive and systematic guidance, certification, and evaluation of building performance. Whether for commercial office buildings, tenant spaces, or various sectors such as hospitals, wellness projects, residences, and schools, following the WELL Standard can help create healthier and more comfortable indoor environments.

 

WELL Building Performance Verification

On-site performance verification is an essential step of WELL certification. The PV must be conducted by a WELL Performance Testing Agent (PTA) at the project site to collect and analyze data. As an IWBI-recognized WELL performance testing provider (PTP), CTI provides on-site performance testing services for WELL projects. These services cover on-site testing and laboratory analysis for concepts such as air, water, light, thermal comfort, and acoustic environments, primarily including the following items:

 

Air Quality

WELL v2 & v2 pilot
Feature Parameters
v2 v2 pilot
A01.1 & A05.1 PM2.5, PM10 PM2.5, PM10
A01.2 & A05.2 Benzene, formaldehyde, toluene, acetaldehyde, acrylonitrile, caprolactam, naphthalene Formaldehyde, benzene, carbon disulfide, carbon tetrachloride, chlorobenzene, chloroform, dichlorobenzene (1,4-), dichloroethylene (1,1), ethylbenzene, hexane(n-), isopropyl alcohol, methyl chloroform, methylene chloride, methyl tert-butyl ether, styrene, tetrachloroethene, toluene, trichloroethylene, vinyl acetate, xylene (m, o, p combined)
A01.3 & A05.3 Carbon monoxide, ozone, nitrogen dioxide Carbon monoxide, ozone, nitrogen dioxide
WELL v1
Feature Parameter
F01.1 Formaldehyde, TVOC, individual VOCs listed in AAPs
F01.2 PM2.5, PM10, carbon monoxide, ozone
F01.3 Radon

 

 

Water Quality

WELL v2
Feature Parameters
W01.1 Turbidity, total coliforms
W02.1 Arsenic, cadmium, chromium (total), copper, fluoride, lead, mercury (total), nickel, nitrate, nitrite, total chlorine, residual chlorine, total trihalomethanes, haloacetic acids
W02.2 Two of the followings: aldrin and Dieldrin (combined), atrazine, carbofuran, chlordane, 2,4-dichlorophenoxyacetic acid (2,4-D), dichlorodiphenyltrichloroethane (DDT) and metabolites, Lindane, pentachlorophenol (PCP);
three of the followings: benzene, benzo[a] pyrene, carbon tetrachloride, 1,2-dichloroethane, tetrachloroethene, toluene, trichloroethene, 2,4,6-trichlorophenol, vinyl chloride
W04.1 Aluminum, chloride, copper, manganese, iron, silver, sodium, sulfate, zinc, total dissolved solids (TDS), residual chlorine
WELL v2 pilot
Feature Parameter
W01.1 Turbidity
W01.2 Total coliforms (including E. coli)
W02.1 Lead, arsenic, antimony, mercury, nickel, copper, cadmium, chromium(total)
W02.2 Styrene, benzene, ethylbenzene, vinyl chloride, toluene, xylenes(m, p, o), tetrachloriethylene
W02.3 Total trihalomethanes, total haloacetic acids
W02.4 Atrazine, simazine, 2,4-dichlorophenoxyacetic acid
W02.5 Nitrate
W02.6 Fluoride, total chlorine, chloramine
W04.1 Aluminum, chloride, fluoride, manganese, sodium, sulfates, iron, zinc, total dissolved solids
WELL v1
Feature Parameter
F30.1 Turbidity
F30.2 Total coliforms (including E. coli)
F31.1 Lead, arsenic, antimony, mercury, nickel, copper
F32.1 Styrene, benzene, ethylbenzene, polychlorinated biphenyls, vinyl chloride, toluene, xylene, tetrachloroethylene
F33.1 Atrazine, simazine, glyphosate, 2,4-dichlorophenoxyacetic acid
F33.2 Nitrate
F34.1 Total chlorine, chloramine
F34.2 Total trihalomethanes, total haloacetic acids
F34.3 Fluoride
F37.1 Aluminum, chloride, manganese, sodium, sulfate, iron, zinc, total dissolved solids

 

Light

Parameter Feature
v2 v2 pilot v1
Visual lighting L02.1 L02.1 F53
Circadian lighting L03.1 L03.1 F54

 

Thermal Comfort

Parameter Feature
v2 v2 pilot v1
Dry bulb temperature T01.1 T01.1 & T02.1 F76.1, F76.2 & F76.3
Mean radiant temperature T01.1 T01.1 & T02.1 F76.1, F76.2 & F76.3
Relative humidity T01.1 & T07.1 T01.1, T02.1 & T07.1 F16.1, F76.1 & F76.3

 

Sound

Parameter     Feature
v2 v2 pilot v1
Background noise levels S02.1 S02.1 -
Sound insulation S03.2 S03.1 -
Reverberation time S04.1 S04.1 F78.1 & F78.2
Sound masking - S05.1 F79.2

 

Service Advantages

 

PV Service Process


 

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