Oriental Instruments Ltd.

MILK CHECKER N-4L - Digital Mastitis Detector

ELECTRIC CONDUCTIVITY OF ALL QUARTERS ARE DISPLAYED SIMULTANEOUSLY, AND BOVINE MASTITIS IS EASY TO BE DETECTED.

Milk checker is handy type instrument for cows to measure the electrical conductivity of milk in quarters of udder and to detect mastitis.
When inflammation or other mammary disorders occurs, plasma constituents may exudate and cause changes in concentration of electrolytes contained in cow milk such as Na⁺, CL^-, etc. A rise in sodium and chloride content results in increased electrical conductivity in the milk.
Milk Checker is based on this principle and can detect abnormalities in the udders quickly and accurately by measuring electrical conductivity of milk.

FEATURES

Milk Checker is very helpful to dairy farmers abnormal milk caused by mastitis can be accurately detected by computerized mechanism.
Because it is easy and simple to handle and the results can be quickly determined.
By the diagnostic method on the new principle different from conventional method, abnormal milk can be detected in earlier stage.
Detection results are displayed for all of the quarters of the udder at the same time. The results of the difference between quartes of the udder can also be displayed.

WHAT IS SUBCLINICALA MASTITIS?

Clinical mastitis can be easily detected because "kernels" are found in milk or various changes occure in udder. However it is very difficult to detect latent or subclinical mastitis by visual inspection.

It is occur by 15-40 times more prevalent than clinical mastitis.
It usually precedes clinical mastitis.
It is of long duration.
It causes reduction in milk production and also adversely affects milk quality. (W.N.Philpot)

ECONOMIC LOSS DUE TO MASTITIS Decrease of milk quantity caused by subclical mastitis occupies 70% of total economic loss due to mastitis. Without being aware this disease causes considerable loss to dairy farmers.

The changes of milk quality due to mastitis are characterized by increase of Na⁺ and Cl^- and decrease of K⁺ and lactose. The percentage of these ingredients are kept in balance due to osmotic pressure regardless of cause or degree of inflammation. Milk Checker makes it possible to diagnose mastitis by detecting abnormal milk quality, and it is possible to test low ingredient milk with lower lactose content.

Threshold

THRESHOLD FOR ABNORMAL MILK BASED ON ABSOLUTE CONDUCTIVITY VALUES AND DIFFERENTIAL CONDUCTIVITY VALUES BETWEEN QUARTERS OF UDDER.

Examples of normal milk

Examples of low ingredient milk and physiologically abnormal milk

Examples of mastitis milk (Example 1)

Examples of mastitis milk (Example 2)

DISPLAY

**Example 1**
Measured values	5.9	6.1
Measured values	5.8	6.5

**Example 2**
Differences between quarters of udder	0.1	0.3
Differences between quarters of udder	0	0.7

**FUNCTION**
1	Small Electrode sensor	This is build-in unit, measuring electric conductivity.
2	Temperature Sensor	Electric conductivity is changed by temperature easily, but it compensates temperature automatically.
3	Sampling Cup	Cup is designed to ease sampling.
4	Digital Display	Absolute electric conductivity of all quarters are displayed in digital simultaneously, then calculates differential E.C. automatically, and also indicates calibrated electrical conductivity.
5	Power switch (ON/OFF)	Press the switch first for turning on the power. By pressing it again, power is turned off. (If not in use, unit will turn itself off after 3 minutes.)
6	Measuring switch (TEST)	E.C of four quarters are displayed in one display simultaneously by pressing. TEST switch 4 times for individual quarter and then press this switch one more time (the 5th time) for calculation fo differential E.C.
7	Clear Switch (CLEAR)	To test the new cow, the Clear Switch will cease the previous reading held.
8	Battery box	It is placed on the back side of unit.
9	Wrist Strap

**SPECIFICATION**
Measuring method	Measurement of electrical conductivity
Display	Simultaneous display for all of quarters of udder. 3-digital display; Difference between quarters of udder displayed by computerized calculation.
Measuring range	0 to 13.0 mS/cm
Automatic temperature compensation	0 to +40ºC(compensated to +25ºC)
Power supply	Dry cells (AA×2)
Dimensions	91(W)×45(H)×181(D)mm
Weight	320g

Oriental Instruments Ltd.
Taiki Bldg, Takadanobaba 1-34-8, Shinjuku-ku, Tokyo 169-0075, Japan
Telephone +81-3-3209-0425 Facsimile +81-3-3209-9807