can this be submerged 24/7?

Yes it can be in the water 24/7.

Is this a combination pH electrode? Does it have a built-in reference electrode?

It's a BNC type pH electrode with built-in reference.

What input voltage range does this probe use?

They read charged hydrogen (h+) ions that get through a glass membrane. DC Milivolts

How do you calibrate this device? Do you have instruction manual I can take a look at?

It comes with a solution that I haven't used. To calibrate, I use some Atlas Scientific pre-mixed calibrated solutions. I do a 3-point calibration using pH solutions of 4.00, 10.00, and 7.00. I swap out sensors and calibrate once a week. My software has a scale factor and an offset to use the calibration. These are great pH sensors and better than the Atlas Scientific ones I used to use. However, you will have to average over many readings to get accuracy. I take 100 readings, keep the inner 60, and then average. It takes about 7 seconds to do all that.

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Long Body pH Electrode with BNC Socket Probe 300cm Cable 0-14pH for pH Meter, pH Controller pH Device Economical Sensor

Product ID: 104963306

📏300cm extended cable length

🔌Universal BNC socket compatibility

⚗️0-14 pH full measurement range

R$318

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Description

⚡ Stay ahead in every test with precision that travels the distance!

FULL SPECTRUM P H ACCURACY - Measures the entire pH scale from 0.00 to 14.00 for versatile applications.
PLUG PLAY COMPATIBILITY - BNC socket ensures seamless connection with most pH meters and controllers.
BUILT TO PROTECT BUILT TO LAST - Includes a protective cap to safeguard the sensitive electrode bulb during transport and storage.
EXTENDED REACH MAXIMUM FLEXIBILITY - 300cm cable lets you test hard-to-reach spots without hassle.
PRECISION ENGINEERING IN COMPACT FORM - Slim 1.2cm diameter probe with a 14.7cm length for easy immersion in diverse environments.

This Long Body pH Electrode features a 300cm cable with a universal BNC socket, enabling precise pH measurements across the full 0-14 range. Designed for professional use in labs, aquariums, hydroponics, and water quality monitoring, it combines durability with convenience, including a protective cap and a slim probe for versatile applications.

Specifications

ASIN	B07KG2PQMN
Best Sellers Rank	#35,587 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #38 in Lab pH Meters #73 in Swimming Pool Test Strips
Date First Available	January 14, 2019
Item Weight	6 ounces
Item model number	KIB-87
Manufacturer	DANOPLUS
Package Dimensions	7.09 x 2.6 x 1.26 inches

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R$318

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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