How would it test pH in a person? How can we do it once purchased?

I am not sure if you can use this to test the pH if a person. Perhaps by putting it in sweaty skin. You should call manufacturer to see if they can answer your question.

can i use this meter for cheesemaking?

Don't see why notCheesemaking websites list similar ones, maybe less precise than this but same technology

Can I use for stiff dough?

Yes you can. This can read liquids and solids. I use mine to measure the ph of cheese curds and whey.

I have a very similar meter but it is "ph110" instead of "ph100." will this "ph105" sensor work with the "ph110?"

Yes the PH105 is the replacement pH electrode for both the PH100 and PH110.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Extech PH110 Waterproof ExStik pH Meter

Product ID: 320507180

Details

Battery description
Alkaline" or
Brand
Extech
Colour
Green
Item weight
0.12 Kilograms
Product dimensions
41W x 36H

💧Waterproof design for durability

🧠Smart chip with electrode life prediction

🌡️Wide temp range -58°F to 572°F

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€ 228.29

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay sharp, measure smart — the pH meter that works as hard as you do!

MEMORY STORAGE FOR 15 READINGS - Track and label your data effortlessly
PRECISION P H RANGE 0 00 14 00 - Get lab-grade accuracy for every measurement
ADJUSTABLE STAINLESS STEEL PROBE - Flexible 0° to 180° angles for versatile use
SMART ELECTRODE RENEWAL INDICATOR - Stay ahead with predictive maintenance alerts
AUTOMATIC TEMPERATURE COMPENSATION - Ensures flawless readings in varying conditions

The Extech PH100 is a waterproof, professional-grade pH meter featuring a broad pH range (0.00–14.00), automatic temperature compensation, and a smart chip that predicts electrode performance. Its adjustable stainless steel probe and memory storage for 15 labeled readings make it ideal for precise, on-the-go measurements in demanding environments.

Specifications

ASIN	B004WN9QUG
ASIN	B004WN9QUG
Batteries	4 Lithium Metal batteries required. (included)
Batteries	4 Lithium Metal batteries required. (included)
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Color	Blue/Grey
Customer Reviews	4.2 4.2 out of 5 stars (74)
Customer reviews	4.2 4.2 out of 5 stars (74)
Date First Available	3 August 2012
Date First Available	3 August 2012
Included components	Refillable pH electrode, a 1.5mL KCI, reference junctions, removal tools, cap, cup, batteries, strap
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	110 g
Item model number	PH110
Item model number	PH110
Manufacturer	Extech
Manufacturer	Extech
Number Of Pieces	1
Part number	PH110
Pattern	pH Meter
Power source type	Battery Powered
Product Dimensions	17.28 x 4.07 x 3.56 cm; 110 g
Product Dimensions	17.28 x 4.07 x 3.56 cm; 110 g
Style	PH110

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