There are two fundamentally different measurements of dairy products: titratable acidity and pH. pH is a measurement of hydrogen ion concentration while titratable acidity is the neutralizing capacity of a dairy product with NaOH.
An increase in acidity can be caused by bacteria formation. Monitoring acidity is a way of determining the quality and freshness of dairy products. Acidity is determined by a pH endpoint titration using sodium hydroxide, and is defined as the consumption necessary to shift the pH value from 6.6 (corresponding to fresh milk) to a pre-determined pH value. While pH 7.0 is the actual point of neutralization, phenolphthalein is commonly employed as a color indicator to determine the endpoint of the reaction. When using phenolphthalein as an indicator a faint pink color change occurs at pH 8.3. Titratable acidity is expressed in a variety of units based on the titration method performed. Each method varies in sample size and strength of NaOH used for the titration.
% Lactic Acid (%l.a.): is determined by taking a 20 mL or 20 g sample and diluting with twice its volume with deionized or distilled water. The sample is then titrated with 0.1 M sodium hydroxide to a phenolphthalein end point.
Degree Soxhlet Henkel (°SH): is determined by titrating a 50 mL sample with 0.1 M sodium hydroxide to a phenolphthalein end point.
Degree Dornic (°D): is determined by titrating a 100 mL sample with N/9 sodium hydroxide to a phenolphthalein end point.
Degree Thörner: is determined by taking a 10 mL sample and diluting with twice its volume with deionized or distilled water. The sample is then titrated with 0.1 M sodium hydroxide to a phenolphthalein end point
Knowing the relationship between sample weight or volume and strength of titrant it is possible to convert the reading obtained from one method to another. Below is a table with the factors preprogrammed in the HI84529 for converting between various units of measure.
From: |
To: |
Divide By: |
%l.a. |
°SH |
0.0225 |
%l.a. |
°D |
0.0100 |
%l.a. |
°Th |
0.0090 |
Table for converting % lactic acid (%l.a.) to Degree Soxhlet Henkel (°SH), Degree Dornic (°D), and Degree Thorner °Th.
The HI84529 uses methods based on AOAC International and Standard Methods for the Examination of Dairy Products. Both of these methods report titratable acidity as % lactic acid and a conversion factor is used to convert the results to the other available units. The HI84529 can be customized to meet the needs of any dairy analysis lab. Samples can be titrated by weight or volume, diluted or non-diluted (low range only) and titrated to a �fixed pH endpoint that can be adjusted by the user. The HI84529 offers three different methods depending on the expected range and the weight of sample used. Select low range 50 to titrate a 50 ml or 50 g undiluted sample. The other titration options are low range 20 and high range 20 to titrate 20 mL or 20 g samples that are diluted twice their volume with deionized or distilled water.
Range | Low Range: %l.a.: 0.01 to 0.20; °SH: 0.4 to 8.9; °D: 1.0 to 20.0; °Th: 1.1 to 22.2 High Range: %l.a.: 0.1 to 2.0; °SH: 4.4 to 88.9; °D: 10 to 200; °Th: 11.1 to 222.2 |
---|---|
Resolution | Low Range: %I.a.: 0.01 ; °SH: 0.1; °D: 0.1; °Th: 0.1 High Range: %I.a.: 0.1; °SH: 0.1; °D: 1; °Th: 0.1 |
Accuracy (@25ºC/77ºF) | Low Range: ± 0.01 %l.a. High Range: ± 0.1 %l.a. |
Sample Volume | LR 20: 20 mL or 20 g LR 50: 50 mL or 50 g HR 20: 20 mL or 20 g |
Method | acid base titration |
Principle | endpoint titration, adjustable (pH 8.0 - 8.7 in 0.1 increments) |
Pump Speed | 10 mL/min |
Stirring Speed | 800 (Low Range) / 1000 (High Range) |
pH Range | -2.0 to 16.0 pH; -2.00 to 16.00 pH |
pH Resolution | 0.1 pH / 0.01 pH |
pH Accuracy (@25ºC/77ºF) | ±0.01 pH |
pH Calibration | one, two, or three-point calibration, four available buffers (4.01, 7.01, 8.20, 10.01) |
Temperature Compensation | manual or automatic |
mV Range | -2000.0 to 2000.0 mV |
mV Resolution | 0.1 mV |
mV Accuracy (@25ºC/77ºF) | ±1 mV |
Temperature Range | -20.0 to 120.0°C; -4.0 to 248.0°F; 253.2 to 393.2 K |
Temperature Resolution | 0.1°C; 0.1°F; 0.1 K |
Temperature Accuracy (@25ºC/77ºF) | ±0.4°C; ±0.8°F; ±0.4 K |
Logging Data | up to 400 ( 200 titrations, 200 pH/mV readings) |
Electrode | FC260B pH electrode with 1 m (3.3’) cable (included), HI5315 reference probe with 1 m (3.3’) cable (included) |
Temperature Probe | HI7662-M stainless steel temperature probe with 1 m (3.3’) cable (included) |
Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing |
Power Supply | 12 VDC adapter (included) |
Dimensions | 235 x 200 x 150 mm (9.2 x 7.9 x 5.9”) |
Weight | 1.9 kg (67.0 oz.) |
Ordering Information | HI84529-01 is supplied with FC260B pH electrode, HI5315 reference electrode, HI7662-M temperature probe, HI84529-50 low range 20 titrant (120 mL), HI84529-52 low range 50 titrant (120 mL), HI84529-51 high range 20 titrant (120 mL), HI84529-55 calibration standard (230 mL), HI7072 fill solution (30 mL), HI700640 cleaning solution for milk deposits (2 x 20 mL), capillary dropper pipette, 100 mL beakers (2), dosing pump valve, 5 mL syringe, 1 mL plastic pipette, tube set (aspiration tube with titrant bottle cap and dispensing tube with tip), stir bar, 12VDC power adapter, instruction manual and quality certificate. |
HI-84529 Titratable Acidity Mini Titrator for Milk Analysis
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Mini Titrator for Measuring Titratable Acidity in Dairy Products ...
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The HI84529U-01 is a simple, fast, and affordable automatic mini titrator designed for ... Titratable Acidity Mini Titrator for Dairy Analysis front view - HI84529U-01 .... CAL Check™ Accuracy is always ensured with Hanna's unique CAL Check ... HI84529-51 high range 20 titrant (120 mL), HI84529-55 calibration standard (230 ...
HI-84529 Titratable Acidity Mini Titrator for Milk Analysis
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HI-84529 Titratable Acidity Mini Titrator for Milk Analysis. The Hanna HI-84529 is a great, low cost mini titrator and pH meter designed for testing acidity levels in milk products. Intuitive and easy to use, it delivers fast, reliable and repeatable results – great for busy laboratories.
Titratable Acidity Mini Titrator for Dairy Analysis | Geneq
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Hanna - HI84529 - Easy to use, fast and affordable automatic mini titrator designed for testing titratable acidity levels in dairy products. Get a Quote.
Mini Titrator for Measuring Titratable Acidity in Dairy Products ...
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Based on an acid-base titration method, this mini titrator uses an optimized pre-programmed method of analysis with a ... The HI84529 can be customized to meet the needs of any dairy analysis lab. ... Manufacturer : Hanna Instruments
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Hanna Instruments HI 84529 Titratable Acidity Mini Titrator for Dairy Analysis. Monday, 02 September, 2013 | Supplied by: Hanna Instruments Pty Ltd.
Mini Titrator for Measuring Titratable Acidity in Dairy ... - Mediray
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... foodcare pH electrode. Brand: Hanna ... High Range 20 Titrant for Titratable Acidity in Dairy Mini Titrator - HI84529-51. Product Code: ... The HI84529 can be customized to meet the needs of any dairy analysis lab. Samples can be titrated by ...
Hanna HI84529-02 Titratable Acidity Mini Titrator for Dairy ...
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Distributor of Hanna HI84529-02 Titratable Acidity Mini Titrator for Dairy Analysis (-2.0 to 16.0 pH; -2.00 to 16.00 pH) HANNA, SCHOTT, SI ANALYTICS, YSI.
[PDF]5 Titratable Acidity Mini Titrator and pH Meter - Splabor
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HI84529. Titratable Acidity. Mini Titrator and. pH Meter for the Dairy Industry ... This meter reflects Hanna's years of experience as a manufacturer of analytical instruments. This mini titrator includes a pre-programmed analysis method designed.
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Hanna Equipments India Private Limited - offering Mini Titrator For Measuring Titratable Acidity In Dairy Products, HI84529 in Navi Mumbai, Maharashtra. ... method, this mini titrator uses an optimized pre-programmed method of analysis with a ...
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