Table of Lovibond Colour Grading Discs for use with the Comparator ...

Table of Lovibond Colorimetric Chemical Analysis Discs for use with the Comparator System 2000
ORDER PRICE TEST DISC RANGE COVERED CHEMICAL METHOD ACCESSORIES REMARKS
CODE CODE CODE BASED ON REQUIRED
FOOD AND BEVERAGE QUALITY CONTROL
ALPHA AMYLASE ACTIVITY
24 29 00 C MALT, SINGLE FILTER 4/29 Pass/fail Starch/iodine 13.5 mm cells DB 424
24 26 00 C PASTEURISED LIQUID EGG 4/26 1, 2, 3, 4, 5, 6, 7 Starch/iodine 25 mm cells W680/OG/25 Test for alpha amylase activity to
check the efficiency of heat
pasteurisation of liquid eggs.
MILK QUALITY
24 09 00 B RESAZURIN TEST 4/9 0, 1, 2, 3, 4, 5, 6 Resazurin tablets Milk Viewing Stand,Tubes Rapid indication of bacterial content
AF 215TT
of milk.
24 13 00 B PHOSPHATASE IN MILK 4/13 0, 6, 10, 14, 18, 25, 42 µg/ml Aschaffenburg & Mullen Milk Viewing Stand,Tube Rapid test for milk phosphatase to
p-nitrophenol phosphatase test AF 215TT check the efficiency of pasteurisation
24 10 00 B PHOSPHATASE IN MILK 4/10 0.5, 1.5, 1.8, 2.1, 2.3, 2.5, 3.0 'blue units' Kay & Graham method Milk Viewing Stand,Tubes Rapid test for milk phosphatase to
AF 215TT
check the efficiency of pasteurisation.
24 17 00 B LACTIC ACID CONTENT 4/17 0, 0.01, 0.02, 0.03, 0.04, 0.05% lactic acid Ferric chloride Milk Viewing Stand,Tubes Test for estimating shelf-life.
AF 215TT
MISCELLANEOUS QUALITY TESTS
23 80 00 C ALCOHOL CONTENT 3/80 1, 2, 3, 4, 4.5, 5, 6 g/l Chromic acid 13.5 mm cells DB 424 Rapid, accurate means of determining
the alcohol content of drinks, juices
and vinegar.
23 30 00 C FURFURAL IN WHISKY 3/30 0.25, 0.5, 0.7, 0.8, 0.9, 1.9, 1.1, 1.2, Aniline acetate 13.5 mm cells DB 424 For determining fufuraldehyde
1.3 g/100 litres absolute alcohol in whisky.
24 45 00 C SUGARS (REDUCING) IN 4/45 0.06, 0.12, 0.20, 0.28, 0.38, 0.49, 0.67, Picric acid Standard lab equipment,
POTATOES 0.95, 1.35% specified in test method
CHEMICALS & PETROCHEMICALS, MISCELLANEOUS QUALITY TESTS
29 64 30 C ACID WASH COLOUR - 1, 2, 3,4, 5, 6, 7, 8 Sulphuric acid wash Tube AF 223A For quality testing of industrial
aromatic hydrocarbons (ASTM D 848).
29 28 00 C IMPURITIES IN ACETONE - Pass/fail, single filter Permanganate reduction Nessler cylinders AF 306/P For quality testing of acetone
and methanol (ASTM D 1363).
29 99 70 C METHANOL IN WATER - 0, 100, 300, 500, 700, 900, 1200, 1500, Dichromate reduction 13.5 mm cells DB424
2000 ppm V/V
MINERAL OILS, FUELS AND GASES
ANTI-ICING ADDITIVE IN AVIATION FUELS
24 33 00 D ANTI-ICING ADDITIVE 4/33 0.04, 0.06, 0.08, 0.10, 0.12, 0.14, 0.15, Potassium dichromate 25 mm cell W680/OG/25 % by volume of diethylene glycol
0.04 - 0.18 0.16, 0.18% monomethyl ether in aviation fuels.
24 44 10 D ANTI-ICING ADDITIVE 0 - 0.2 4/44A 0, 0.05, 0.07, 0.08, 0.10, 0.12, 0.15, 0.20% Hexanitrato ammonium 13.5 mm cells DB 424 As above; conforms to NATO
cerate
requirements.
QUINIZARIN IN MARKED OILS
24 43 10 C ROADSIDE TEST 4/43A 10, 20, 30, 40, 50, 60, 80, 100% quinizarin Sodium hydroxide extraction Extraction tube AF 262 Roadside test to determine quinizarin
in marked oils as prescribed by HM
Customs & Excise. Test kit 422310.
24 43 20 C WAREHOUSE TEST 4/43B 40,50,60,80,100,120, 140, 200% quinizarin Sodium hydroxide extraction Extraction tube AF 260 Available as test kit,AF 626.
24 43 30 C ROADSIDE TEST 4/43C 10, 20, 30, 40, 50, 60, 80, 100% quinizarin Decalin extraction 40 mm cells DB 428, To IP 298/80.
portable lighting unit
CARBONISABLE SUBSTANCES
24 46 00 C INSOLUBLE CONTENT 4/46 0.2, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, Colour match with sample 13.5 mm cells DB 424 Determination of insolubles in
OF DIESEL ENGINE OIL 2.0% insolubles diluted with white spirit lubricating oil. Test kit,AF 508.
29 16 10 C WHITE MINERAL OIL - Pass/fail, single filter Sulphuric acid wash Tube AF 260 Quality testing of white mineral
(ASTM D 565).
29 64 90 C LIQUID PARAFFIN - Pass/fail, single filter Sulphuric acid wash 10 mm cell W680/0G/10 British Pharmacopoeia sulphuric
acid test for carbonisable substances
in liquid paraffin.
LEAD CONTENT
25 17 00 B TRACE CONCENTRATIONS 5/17 0.002, 0.004, 0.006, 0.008, 0.010, Dithizone 5 mm cell W680/OG/5 Aviation turbine fuels and light petroleum
OF LEAD 0.012, 0.014, 0.016, 0.018, 0.02 mg Pb 20 mm cell W680/OG/20 distillates. As specified in IP 224;
parts per billion to parts per million.
29 65 91 C TRACE CONCENTRATIONS - 0, 1, 2, 3, 4, 6, 8, 10, 15 ppb Dithizone 13 mm cells W680/OG 13 Lead in gasoline or naphthas,
OF LEAD UOP Method 350.
A HYDROGEN SULPHIDE Bismuth nitrate Nessler cylinders AF 306/P SRUAN 7
IN PROCESS GAS