Reliable PH Pen/Meter?

[Trichome farmer]

Ive seen these last night and was interested. Can i calibrat3 with ph buffer 7 or does it have to be their own fluid

i use vitalink calibration fluids but any of them will do the job just get some 4.0 and 7.0 i just bought some blue lab meters on black friday and they read the same numbers and thats like i said after 2+ years of use zero cleaning or much care given because they were cheap only problem i had was i let water drip in the top where the on switch is and it killed one but that was my fault not theirs so i can recommend them to anyone on a budget

 

[EP3]

Mine has been rattling about in my hand tools box in the back of my van in all sorts of temps and humidity. I was totally unaware of the care packages and never stored it in storage solution, never calibrated it with anything other than bottled water with a ph number on it. I have checked it against my pals blue lab meter he bought and its accurate.(after I calibrated with buffer) I have had it years too. I now look after it and keep it wet in storage solution and calibrate regularly.

 

[shumway]

Bought the Apera 20 from amazon and its pretty decent,On the cheaper side and easy to use and comes in a pack with a couple big bottles of ph and storage solutions

Amazon product

 

[Olderfart]

Bought the Apera 20 from amazon and its pretty decent,On the cheaper side and easy to use and comes in a pack with a couple big bottles of ph and storage solutions

Amazon product

Plus one on an Apera. Stretch the budget a few bucks and pretend that you got an Apera at a sale price lower than regular by the price of a cheap dead meter. I tried the cheap route, and luckily for me it died soon enough to be sent back to Amazon for a refund. The Apera I replaced it with is still dead accurate after a year of use and storage.

Whatever you buy, store it with the probe immersed in storage fluid, not dry, and not in plain water.

 

[JSH1973]

I really like this Apera kit
Amazon product

 

[Arthur]

Have used the dr meter for 2 years now. As long as its kept in the storage solution, and calibrated regularly, I haven't had any issues.

 

[MrAutoGrower]

I've been considering purchasing the PH600 by Milwaukee. I can get my hands on one for roughly $30. One point calibration and seems accurate and reliable. Was also looking at the Dr Meter with mixed reviews

 

[DCLXVI]

I also have the Milwaukee PH600. The package I got said it is made in Romania. Good or bad, I just didnt like the look of the $10 China made units.

I am running the general hydroponics calibration fluid A.K.A Standard Reference Solution 7.0, I have been calibrating once a week. It has changed a bit and needed recal but I think it being brand new it just needed to settle in. Has been very accurate the last 2 times I checked it.

Also, do get storage solution as it has a glass bulb sensor. I have the Apera 3 molar KCL solution. I recommend a dropper or empty syringe to fill the cap. It takes between 10-12 drops to get just the right amount that it doesn't squirt out the top when capped.

I hang mine with a rubber band in the clip on the back. You can see the salty crust from the storage solution. Used a little too much. Hence getting the number of drops juuuust right. I have my syringes taped to the sides so they don't get cross contaminated.