Testing Services #6554644

Electronic products need to be checked for safety-related issues such as overheating, electrical shock, vibrations and explosion. At Sigma, we offer testing solutions which are fast & efficient. Inspection and certification services for electronic products are conducted in our state-of-the-art laboratories. Ranging from household appliances, IT equipment to electronic toys, amusement and gaming machines, we provide quality testing solutions literally for all varieties of electronic and electrical products. We check products for their safety, quality and performance standards. The major categories under electronics and electrical products that are tested in Sigma Test & Research Centre include: Household Electrical Appliances- Safety of household appliances such as refrigerators, cooking & laundry appliances, vacuum cleaners, hairdryers, etc. is important. Sigma is one such reliable place, where you can get a complete range of testing services to meet regulatory and technical requirements across the globe. Appliances are tested for their energy consumption, efficiency, class labelling and electrical safety. RoHS Test- Sigma has an experienced team of experts in performing RoHS2 compliance testing. We use spectroscopy and wet chemistry methods for determining the concentration of hazardous substances in Raw materials of Final products. Ingress protection- Ingress is defined as a products resistance to water, dust and foreign objects. Ingress protection testing helps in determining the susceptibility of a product to solid particles (sand or dust), water ingress and ingress to other foreign objects. Most commonly tested products include medical devices, light fixtures & sealed items.

Chemical testing for automotive components: Vehicles face latent threat each time they hit the road, although the inherent danger on roads cannot be eliminated completely, chemical testing of vehicles and its components can ascertain that they function to the best of their ability. We offer tests which provide highly accurate chemical analysis of metals, plastics and other non-metallic products to ensure that your vehicle adheres to stringent industry standards and conform to the required safety rules and regulations. Alkali Resistance Test:Automobiles like any other substance or article need cleaning and washing from time to time. Effective cleaning involves the spraying of cleansing agents which contain strong alkaline substances. Spraying of alkaline cleansers on high pressure tends to wither the surface of anodized aluminium coating over the metallic bodies of the vehicle. Anodizing is a preventive measure through which aluminium components can be saved from corrosive impacts of alkaline substances. This process involves creating a coating over the metal by oxidizing it through undertaking electrolysis in sulphuric acid. We offer services to determine the strength of the anodized layer formed through this process and its ability to resist corrosive impacts inflicted by alkaline substances.Fuel Resistance Test: Liquid fuels like petroleum and diesel are used to derive energy for operation and petroleum-based products are used in the composition of motor oils in a vehicle. Also, they are always prone to leakages and spillage of fuel and fuel-based products. Fuels are highly flammable, hence it becomes critical for vehicle manufacturers to ensure that in case of spillage or leakage the vehicle is equipped to prevent potential ignition damage.

Tensile strength:Tensile strength of a product is the maximum stress or force it can endure before it reaches its breaking point. For vehicle manufacturers, it is essential to know how sturdy their products actually are before they pass on the product to consumers. The body of a car is predominantly made up of metal, plastic and glass, which are subjected to all sorts of weights, forces and stresses to measure their endurance capacity. Vehicles require need to have considerable tensile strengths so that they can sustain themselves in case of collisions and accidents. We have facilities that to provide highly reliable tensile strength testing for each and every component of vehicles in order to ensure they conform to the safety and industry standards. Impact Test:Vehicles at all times face latent collisions, accidents and crashes which could lead to fatality of the persons sitting inside. For vehicle manufacturers, it is quintessential to ensure that the components of the vehicle exhibit minimum damage when they encounter such accidents. To ensure this, we have a testing facility which offers tests to ensure the strength and durability of the components in case vehicles bump collide with the external objects. This test helps vehicle manufacturers to conform to safety standards prescribed by the regulatory bodies. Ball Drop Test:A considerably large part of a vehicle is made up of glass, which intrinsically is vulnerable to environmental threats like rocks, pebbles and other heavy objects. For accident-prone vehicles it is essential to ensure that the glass being used in the windshields and windows is sturdy and durable, therefore laminated safety glasses are used. Further to verify if the safety glasses are fit for the purpose they are being used, a ball drop test is done on them. We prove a sophisticated facility for the ball dropping tests on glasses for vehicle manufacturers.

10% Fine Value:All aggregates are required to meet a minimum strength valve, as defined by the 10% value test. This and other specifications ensure that only the highest quality materials are being used on construction projects. Test Method: IS: 2386 (P-4)1963 Alkali Aggregate Reactivity:Alkali-aggregate reaction is the term mainly referred to a reaction which occurs over time in concrete between the highly alkaline cement paste and non-crystalline silicon dioxide, which is found in many common aggregates. This reaction can cause expansion of the altered aggregate, leading to spalling and loss of strength of the concrete.Test Method: IS: 2386 (P-7) 1963 Chloride Content:The total chloride content of aggregate is usually measured to assess whether the aggregates contribution to the total chloride content of a concrete mix will be low enough to prevent the early onset of corrosion of any embedded steel reinforcement.Test Method: IS: 4032-1985 Clay Lumps and friable Particles:This test helps in determining the percentage of clay lumps and friable particles in aggregate. Clay lumps in aggregate shall be defined as any particles or aggregation of particles which when thoroughly wet can be distorted when squeezed between the thumb and forefinger, or will disintegrate into individual grain sizes when immersed for a short period in water. Friable particles are defined as particles which vary from the basic aggregate particles such, that they may either readily disintegrate under normal handling and mixing pressures, imposed upon them by construction procedures, or break down after being incorporated into the work.Test Method: IS: 2386 (P-2) 1963

Chemical AnalysisChemical analysis of hardened concrete can provide information about the mix constituents and possible causes of deterioration. Standard methods can be used to find the cement content and the original water/cement ratio, but many other properties can also be established; Cement Content and Aggregate Cement Ratio, Cement Content and Pulverized fuel ash/fly ash (PFA) content, Cement Content and Slag content, Water/Cement Ratio, Aggregate Grading, Determination of the presence of High-Alumina Cement (HAC) are some of the tests we conduct under chemical analysis.Test Method: IS: 4032-1985 Compressive Strength Test:The most common strength test, compressive strength, is carried out on a 50 mm (2-inch) cement mortar test specimen. The test specimen is subjected to a compressive load (usually from a hydraulic machine) until failure.Test Method: IS: 4031 (P-6) 1988 Fineness Test:The fineness of cement has an important bearing on the rate of hydration and hence on the rate of gain of strength and also on the rate of evolution of heat. Greater fineness increases the surface area available for hydration, causing greater early strength and more rapid generation of heat. Cement fineness plays a major role in controlling concrete properties. The fineness of cement affects the place ability, workability, and water content of a concrete mixture, much like the amount of cement used in concrete does. Test Method: IS: 4031 (P-2)1990

Design Mix: This test helps in determining the suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required strength, durability, and workability as economical as possible is termed as concrete mix design. It involves studying properties of Aggregate, Cement, Water & Admixture (if any), and is used to determine the proper Concrete Mix Design. Test Method: IS: 10262 Ultrasonic Survey: Ultrasonic concrete testing is based on the pulse velocity method to provide information on the uniformity of concrete, cavities, cracks and defects. The pulse velocity in a material is directly proportional to its density and its elastic properties which in turn depends on the compressive strength and the quality of the concrete. It is, therefore, feasible to obtain information about the properties of components by sonic investigations. Test Method: IS 13311 (Part 1) Chloride Content: Measuring the calcium chloride content of concrete is used to determine the dryness of concrete. This test is useful to tell if the concrete is ready for projects such as installing flooring on top of the concrete slab. Though some conditions can alter the results, such as the seasons of the year, the porosity of the concrete, or the mixture of the concrete, a calcium chloride test serves as a good indicator of the usability of concrete. Test Method: IS: 6925-1973 Chloride Permeability: The chloride permeability of concrete subjected to static and repeated compressive loading is evaluated by using this test method. The test results indicate that the chloride permeability of concrete subjected to static and repeated loading at a gradually increasing rate and its residual strain. This test covers the determination of the electrical conductance of concrete to provide a rapid indication of its resistance to the penetration of chloride ions. Test Method: AASHTO T277

Modulus of rupture:Modulus of rupture is the maximum load carrying capacity of a wood sample. It is generally used in tests of bending strength to quantify the stress required to cause breakage. It is reported in units of psi (per square inch). Test Method: IS: 1734 (P-11)1983, RA-2003, IS: 1708 (P-5) 1985 Modulus of elasticity:This test helps in determining the flexural stiffness and modulus of elasticity properties of wood-based materials by nondestructive testing using transverse vibration in the vertical direction. Test Method: IS: 1734 (P-11)1983, RA-2003, IS: 1708 (P-5)1985 Internal bond strength:The purpose of this test is to design a compression shear device for easy and fast measurement of the bond shear strength of wood-based materials. Test Method: IS: 1734 (P-4) 1983, RA-2003 Moisture Content Test:This test helps in determining the moisture content (MC) of solid wood, veneer, and other wood-based materials, including those that contain adhesives and chemical additives. Test Method: IS: 1734 (P-1) 1983, RA-2003 Density Test:Analyzing tree density can serve great ecological and scientific function. These tools are easy to understand and eliminate the risk of damage done to tree specimens. Test Method: 1708 (P-2)1986, RA-2008 Bending Strength Test:In bending, it is assumed that wood is linearly elastic for low values of stress, i.e., the stress and strain are proportional to each other and the output on stress-strain curve is either an elastic or straight-line plot. Test Method: IS: 1734 (P-11) 1983 Compression Strength Test:The Box Compression Test (BCT) measures the compressive strength of boxes made of corrugated fibreboard as well as wooden boxes and crates. It provides a plot of deformation versus compressive force . Containers other than boxes can also be subjected to compression testing such as drum, bucket, etc.

Chemical materials and substances used in products, construction and industrial processes are subjected to a multitude of legal regulations, standards and certifications, ensure compliance with the regulatory requirements of the products and protect the customers from potential harms linked to the presence of banned chemicals.

Sigmas regulatory experts verify the design, safety, and quality of a variety of toys and childrens products to meet the requirements of Govt. of India vide.Sigma Test and Research Centre is a NABL accredited laboratory for Toy Testing as per IS 9873 (Part 1, 2, 3, 7, 9) and IS 15644. IS 9873: SAFETY OF TOYSThe safety of kids of utmost importance and primary to the heart of every parent. While purchasing toys/products for a kid, product safety remains to be an important issue. Finger traps, sharp edges, loose components, presence of toxic materials and substances which are too flammable can all cause severe damage to a child and huge fines on the suppliers of any toy manufacturers/product deemed to be unsafe. IS 9873 Part 1: Mechanical & Physical Properties Of ToysThe principle of this standard is to diminish risks related to childrens toys. Particular tests are performed on toys based upon the toy type and/or characteristics of the toy. In addition, proper warning labels are addressed on the product in this standard. IS 9873 Part 2: Flammability Of ToysThis section determines the flammability of toys. It provides general requirements along with exact requirements for particular toys, which hold potential to be the most harmful, this includes toys to be worn on the head (moustache, wigs, beards, etc.), toy disguise costumes & those intended to be worn by kids during any play, toys intended to be entered by a kid, and soft filled toys.