pH/°C meter for Milk Log-on-demand

HI-98162

Ny

Item no. HI-98162

Mer detaljer

6 300 kr

The HI98162 is a rugged, waterproof, Foodcare portable pH meter that measures pH and temperature using the specialized FC1013 probe for milk products.  This professional, waterproof meter complies with IP67 standards. The HI98162 is supplied with all necessary accessories to perform a pH/temperature measurement packaged into a durable thermoformed carrying case  that holds the meters, probes and calibration buffers securely in place.

he measurement of pH in milk is important in testing for impurities, spoilage, and signs of mastitis infection. While there are a number of factors that affect the composition of milk, pH measurements can help producers understand what might be causing certain compositional changes. pH measurement is commonly performed at various points in a milk processing plant.

Fresh milk has a pH value of 6.7. When the pH value of the milk falls below pH 6.7, it typically indicates spoilage by bacterial degradation. Bacteria from the family of Lactobacillaceae are lactic acid bacteria (LAB) responsible for the breakdown of the lactose in milk to form lactic acid. Eventually when the milk reaches an acidic enough pH, coagulation or curdling will occur along with the characteristic smell and taste of “sour” milk.

Milk with pH values higher than pH 6.7 potentially indicate that the milk may have come from cows with a mastitis infection. Mastitis is an ever-present challenge with dairy milking cows. When infected, the cow's immune system releases histamine and other compounds in response to the infection. There is a resulting increase in permeability of endothelial and epithelial cell layers, allowing blood components to pass through a paracellular pathway. Since blood plasma is slightly alkaline, the resulting pH of milk will be higher than normal. Typically milk producers can perform a somatic cell count to detect a mastitis infection, but a pH measurement offers a quick way to screen for infection.

Understanding the pH of raw milk can also help producers optimize their processing techniques. For example, in operations that use Ultra High Temperature (UHT) processing, even small variations from pH 6.7 can affect the time required for pasteurization and the stability of the milk after treatment.

Measuring the pH of milk can provide a number of challenges. Milk products tend to have a high solids content that will coat the sensitive glass membrane surface and/or clog the reference junction. The FC1013 supplied with the HI98162 is specifically designed for measuring pH in milk. The Polyvinylidene fluoride (PVDF) body is a food grade plastic that is resistant to most chemicals and solvents, including sodium hypochlorite. It has high abrasion resistance, mechanical strength and resistance to ultraviolet and nuclear radiation. PVDF is also resistant to fungal growth. The FC1013 is an ideal general-purpose pH electrode for milk products that connects to the HI98162 with a quick-connect, waterproof DIN connector, allowing for a secure, non-threaded attachment.

Features/Benefits:

Ergonomic, rugged, waterproof (IP67) design

Supplied with FC1013 Foodcare pH/Temperature electrode

  • Body made of food grade PVDF plastic
  • Refillable with silver free electrolyte
  • Open junction design that resist clogging from food solids
  • General purpose pH sensing glass suitable for a wide range of temperatures
  • Built in temperature sensor for temperature compensated measurements

Five-point pH calibration with seven standard buffers and five custom buffers

CAL Check

  • Alerts user to potential problems during calibration including when to clean electrode and possible buffer contamination
  • Displays overall condition of the pH electrode after calibration that is based on the offset and slope characteristics

Log-on-demand

  • Store measurement data at the press of a button

AutoHold

  • Freezes displayed measurement reading upon stabilization

 

GLP Features

  • GLP data including date, time, pH calibration buffers, offset, and slope
  • GLP data stored with logged data for traceability

Calibration timeout to alert the user at a defined interval when the calibration has expired

Multiple language selection

200 hour battery life with battery level displayed on measurement screen

Menu driven for ease of use with virtual-key extended functionality

Contextual help at the press of a button

Backlit, graphic LCD

Connectivity

  • PC connectivity via a sealed opto-isolated micro USB and HI92000 software

Ordering Information:

HI98162 is supplied with FC1013 PVDF body pH electrode, HI7004M pH 4.01 buffer solution (230 mL), HI7007M pH 7.01 buffer solution (230 mL), 100 mL plastic beaker (2), 1.5V AA batteries (4), HI92000 PC software, HI920015 micro USB cable, instruction manual with quick start guide, instrument quality certificate and HI720161 hard carrying case.

Read the brochure: FOOD QUALITY pH METERS

Auto-off user selectable: 5, 10, 30, 60 min or can be disabled
Battery Type / Life 1.5V AA batteries (4) / approximately 200 hours of continuous use without backlight (50 hours with backlight)
Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)
Electrode/Probe FC1013 pre-amplified pH probe with internal temperature sensor, quick connect DIN connector and 1 m (3.3’) cable (included)
Environment 0 to 50°C (32 to 122°F); RH 100% (IP67)
Input Impedance 10¹² Ohms
Log-On-Demand 200 samples (100 pH and 100 mV range)
mV Accuracy ±0.2 mV
mV Range ±2000 mV
mV Resolution 0.1 mV
PC Connectivity opto-isolated USB with optional HI 92000 software and micro USB cable
pH Accuracy ±0.1; ±0.002 pH
pH Calibration up to five point calibration, seven standard buffers available (1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45) + five custom buffers
pH Range -2.0 to 20.0 pH; -2.00 to 20.00 pH; -2.000 to 20.000 pH
pH Resolution 0.1 pH; 0.01 pH; 0.001 pH
Slope Calibration from 80 to 110%
Temperature Accuracy ±0.4°C (±0.8°F) (excluding probe error)
Temperature Calibration manual or automatic from -20.0 to 120.0°C (-4.0 to 248.0°F)
Temperature Range -20.0 to 120.0°C (-4.0 to 248.0°F)
Temperature Resolution 0.1°C (0.1°F)
Weight 400 g (14.2 oz.)

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