Can you give me a calibration certificate with this unit?

LT300 version with NIST costs $289.00 in our valuetesters store. There is a two week lead time, as each unit needs to be calibrated manually.

What is the lowest fc reading this unit will take? Will it measure as low as 0.02 fc?

We have used this device on almost a daily basis since we examine potential customer sites for our lighting products. We found that the greatest consistent resolution you can get .05 increments reliably as compared to other like devices in the same setting. A good product in our opinion.

what is the conversion formula for lux to PPFD for this unit?

Multiply the Lux by the conversion factor to get PPFD. For example, full sunlight is 108,000 Lux or 2000 µmol m-2 s-1 (108,000 ∗ 0.0185).

I can post the calibration certificate?

I think the question needs to be directed to Extech. I'd be interested in their answer.

Extech Lt300 Light Meter | Desertcart Spain

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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€ 527.67

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Description

💡 Illuminate your workspace with precision and style — don’t let poor lighting hold you back!

PORTABLE POWERHOUSE - Lightweight, durable design with protective sensor cover and holster makes on-the-go inspections sleek and stress-free.
EFFORTLESS VISIBILITY - Large, backlit LCD with analog bar graph ensures clear readings even in dim or challenging environments.
SMART DATA MANAGEMENT - Min/Max, data hold, and zero adjustment features empower you to log and compare lighting conditions effortlessly.
VERSATILE SENSOR TECH - Cosine and color-corrected sensor guarantees reliable measurements across all light types—daylight, LED, fluorescent, and more.
PRECISION LIGHTING INSIGHTS - Capture ultra-accurate lux and foot-candle readings up to 40,000 lux for flawless lighting control.

The Extech LT300 Light Meter is a professional-grade handheld device delivering precise light measurements up to 40,000 lux. Featuring a large backlit LCD, advanced min/max and data hold functions, and a cosine/color-corrected sensor, it ensures accurate readings across diverse lighting conditions. Its portable, durable design with protective accessories makes it ideal for facility managers, photographers, and safety inspectors aiming to optimize lighting quality and compliance.

Specifications

ASIN	B000NI69ZY
Batteries	1 Product Specific batteries required. (included)
Best Sellers Rank	#14 in Photographic Light Meters
Date First Available	February 14, 2007
Is Discontinued By Manufacturer	No
Item Weight	7 ounces
Item model number	LT300
Manufacturer	Extech
Product Dimensions	3 x 1.57 x 5.9 inches

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