Polarimeter and its Uses

Polarimeters are scientific instruments that are used to measure the rotation of a plane of polarized light because it passes through sample of a compound that exhibits optical activity. Several chemical compounds exist in more than single optically active form. Each isomer or optically active form of a compound will be capable to rotate polarized light plane by an amount of characteristic of that isomer.

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Polarimetry is a very sensitive and nondestructive method to measuring optical activity exhibited by some organic and inorganic. The human eye nakedly can’t recognize whether the light is polarized, but the polarization effects can be observed by using polarizing filters.

Polarimeter is used to measures the level to which any substance interacts with the plane-polarized light & whether it rotate the plane-polarized light to the right, to the left, or in no way.

A substance is active optically if it rotates the plane-polarized light to right or to the left. While measuring with polarimeter a compound need be optically active and must have a chiral center (a carbon with 4 different attached groups). Depending on the positioning of these 4 different groups about chiral carbon, a compound may rotate the plane-polarized light to the right or to the left. Compounds that don’t rotate light of any kind lack a chiral center.

The direction and number of degrees of rotation are properly measured using polarimeter to offer the observed rotation. This measured calculation must be revised for the length of cell used & the concentration of solution. Comparing the revised observed rotation to the published values can help in identification of unknown compounds.

Portable Gas Detector – Its Types

Portable Gas Detector, also referred as gas alert monitors, is actually a device that helps in gas detection. It’s a kind of safety device that is used in the commercial spaces, industries and the households. When the gas detector monitor senses the presence of any kind of gas in the air beyond permissible level, the alarm rings. It’s a very handy device that can prevent damages & save lives, particularly in those areas which make extensive usage of the harmful gases.

Several types of portable gas detector are available in market like:

Single Gas Detector- As the name propose, this kind of gas detector is capable of sensing the presence of just one gas type at any given time. It isn’t exactly as multipurpose as the detectors which can detect many gases at a time but it’s still a great option for those places where single gas is used like households. It is quite easy to use & relatively inexpensive. Along with the portable models, you can explore the fixed models, wireless fixed models, area detectors & more.

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Multi-Gas Detector- As already specified, single portable gas detector can detect the existence of just one type of gas in a time. However, it isn’t very versatile & not a great option for the places where several gases are utilized. In order to evade any potential dangers, the industries require a gas detector which can detect many gases at a time. The modern gas monitors are designed by making use of advanced technology & they can ring alarm at the occurrence/existence of different kinds of gases. Portable gas detector is also available which can be taken to those areas where fixed-ones can’t be installed.

Martindale Abrasion and Pilling Tester for Industrial Use

Martindale Abrasion & Pilling Tester is used for checking the abrasion besides pilling resistance of fabrics. SKZ Industrial provides you the high-quality Martindale Abrasion and Pilling Tester that is calibrated & available at affordable price. It consists of 4 testing plates where the grazing fabrics is attached, these 4-testing table are well mounted on base plate of this instrument. There’s revolving plate that revolves with the help of 3 cranks, motor and pegs.

 

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There are 4 sleeves attached on revolving plates. The holders for the abrasion and pilling testing are offered with the instrument. There’s a set of weights for the proper pressure on test specimens. The templates for the cutting of samples and abrading cloth as well as their mallet are also provided as the standard accessory.

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Some of the salient features of Martindale Abrasion and Pilling Tester are-

  • Operative speed ratio of the outer pegs towards inner pegs
  • Four specimen can be examined at the same time.
  • Maximum load it can hold is 790g (corresponding to the pressure of 12KN/m2)
  • Include stainless-steel balls.
  • Top Plate made of Acrylic for safety
  • Easy reset counter
  • Excellent testing performance
  • Synchronous motor speed
  • Longer service life
  • Suitable for all kind of fabrics
  • The measurement procedure is unavoidably generate scan & reports that can be printed

The technical Specification of Martindale Abrasion and Pilling Tester comprise of

  • No. of heads – 4
  • Working pressure on the test specimen – 3 KPA, 6KPA, 9KPA & 12 KPA (4 numbers each)
  • Exposed test specimen area – 6.45 cm2
  • Maximum pressure available – 12 KPA (790 grams)
  • Drive speed ratio of inner and outer peg – 32:34