Standards colour coding

Figure 3.1 The structure of the molybdenum cofactor (in W-protein Mo is replaced by W, cyan = Mo or W, orange = P, rest = standard colour code).

Gaseous Products Gases like Oxygen, Nitrogen are filled up under high pressure. All the fittings should be tested to be leak proof at up to 150-200 kg/cm and approved by statutory authorities. Gas cyUnders should be procured from approved manufacturers only and should have serial no, test pressure, date of discontinuation from service marked. Separate record should be kept for each of the gas cylinder procured. The valves should be tested prior to purchase. Only standard colour code should be followed, e g. yellow for chlorine, black for oxygen etc. by the manufacturer. 

The value of the resistor and the tolerance may be marked on the body of the component either by direct numerical indication or by using a standard colour code. The method used will depend upon the type, physical size and manufacturer s preference, but in general the larger components have values marked directly on the body and the smaller components use the standard resistor colour code. 

Small resistors are marked with a series of coloured bands, as shown in Table 3.3. These are read according to the standard colour code to determine the resistance. The bands are located on the component towards one end. If the resistor is turned so that this end is towards the left, the bands are then read from left to right. Band (a) gives the first number of the component value, band (b) the second number, band (c) the number of zeros to be added after the first two numbers and band (d) the resistor tolerance. If the bands are not clearly oriented towards one end, first identify the tolerance band and turn the resistor so that this is towards the right before commencing to read the colour code as described. 

For easy identification and prompt maintenance it is mandatory to segregate all control wires when they are carrying more than one control supply (e.g. at different voltages and both a.c. and d.c.), and run them in separate bunches. The control wires must also be of different colours for different control supplies. The colour codes have been standardized for different control supplies (refer to lEC 60445). 

The peristaltic pump is fitted with colour-coded PVC tubes of varying diameters. The flow rate is governed by the diameter and indicated by the colours of the collar at each end. Standard quality is usually of acceptable... 

The European Standard allows a small colour zone at the top half front of the extinguisher body relating to the old British Standard extinguisher colour coding system, i.e. red for water, cream for foam, blue for powder, black for COj and canary yellow for wet chemical. 

Fig. 2. Section of GCxGC-TOFMS TIC-chromatogram of Ips nitidus frass extract Ik range 900-1100 visualized as contour plot (with n-alkane standards in the upper part) and as 3D-view, respectively. Each spot in the upper 2D-chromatographic plane represents a single compound, the intensity of which is colour coded. White, yellow and red represent low, middle and high intensity, respectively. On the plane, the individual compounds are distributed based on their volatilities (X-axis) and polarities (Y-axis). The more polar and less volatile compounds elute at later retention times. The numbers indicate the identity of fhe compounds as lisfed in Table 1.

Fig. 8.11. Images showing the differences in the cortical structure between a group of healthy controls and a group of patients with Alzheimer s disease. The patients brains have heen warped into a standard coordinate system and these images showthe differences in the amount of deformation needed to make the AD hrains conform to the heathly controls. The colour coding therefore represents the average amount of tissue deformation required showing considerable atrophy has occurred in the frontal and posterior parietal lobes...

The world s simplest Hand Protection Safety System. Using 3 colours, you are able to immediately identify correct glove choice and communicate widely across your company. Whatever country, language or industry TraffiGLOVE works effectively. TraffiGLOVE is a colour coded safety concept based on the EN 388 Cut Resistance safety standard. 

In modern scientific and techno-commercial publications, pigments are frequently discussed using a universally accepted standard coding system known as the Colour Index, which was jointly developed by the Society of Dyers and Colourists in the United Kingdom and the Association of Textile Chemists and Colorists in the United States. The Colour Index identifies each colorant by giving the compound a unique Colour Index name and a Colour Index number. The five or six digit Colour Index number is allocated to a colorant according to its chemical constitution as described in Table 3.1. 

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