Can the color of Fresh Spaghetti Sauce be measured with Tomato Scores?

FAQ: “We have another question. Our current Standard for Fresh Spaghetti Sauce is to Run on the TK setting.

It appears as if the Product is Rather orange compared to our Crushed tomato product which is run on the TS setting resulting in a lower color.

What do you believe is the proper setting for Spaghetti Sauce?

The other thing I noticed is That the Calibration record does not have a TK result documented.” Continue reading

How to determine Lycopene Concentration using a ColorFlex Tomato Meter

Lycopene is the ‘redness” found in tomato products.

In fresh red tomatoes, Lycopene occurs as the major pigment (Lycopersicon esculentum, 85 – 90%). Other pigments present are beta-carotene (10- 15%) and small quantities of about 10 other varieties of carotenoids. The outer skin of the tomato contains the highest concentration of lycopene.

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Directional Instruments

HunterLab Directional Instruments

HunterLab Directional Instruments


HunterLab manufactures bench top instruments with two different geometry types: directional 45/0 (or 0/45) and diffuse sphere instruments, as discussed in a previous blog note. A 45/0 directional instrument illuminates the sample at a 45˚ angle from the sample surface and the detector is located 0˚ in line perpendicular to the sample surface. The inverse, 0˚ illumination and detection at 45˚, can also be used and yields equivalent measurements. The MiniScan EZ and ColorFlex EZ instruments are 45/0 instruments and the LabScan XE is a 0/45 instrument. Continue reading

What Fuse Protection is in place with HunterLab Instruments?

UltraScan VIS 3 amp fuse showing unbroken

UltraScan VIS 3 amp fuse

Fuse location beside power cord

Fuse location beside power cord

All HunterLab instruments have fuses built into the main circuitry to protect the instrument against unusual and unexpected changes in voltage that could damage the electrical components.

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Can Power Supplies in HunterLab Instruments be used everywhere?

ColorFlex EZ AC Adaptor and Universal 120/220 Volt Power SupplyFAQ: “We need to take our LabScan XE instrument to Germany for some plant trial testing.  Our machine is a US spectrophotometer 110v unit and, obviously, the power supply in Germany is 220v. The label on the back of the instrument says ‘110v-220v’, which sounds a little ambiguous to me.  Do we need a voltage transformer or can we get away with only using a plug adapter (does not step down current from 220v, only changes plug shape)?  We don’t want to ruin our baby!” Continue reading