Cheap Bluelab PH Pens Here

[lusidghost]

No longer available. nice score OP!

I wonder how many people saw this thread and grabbed one. I hope everyone has the same luck as me. I'm about to see if it has made it to day two.

 

[lusidghost]

Eh. Still going.

 

[Star Dog]

I wonder how many people saw this thread and grabbed one. I hope everyone has the same luck as me. I'm about to see if it has made it to day two.

I expect a few would, it's half price it's a good time to buy one lol.

 

[Arby64]

I usually use litmus paper. 180 inches of it for $16. The one I use is for the range 5-9 pH. No calibration or batteries required. I use about an inch at a time.

In fact, my pH has tested good so consistently over the years that I usually only test at the beginning of a grow, just to make sure nothing has changed dramatically.

This is the one I use.

 

[lusidghost]

I usually use litmus paper. 180 inches of it for $16. The one I use is for the range 5-9 pH. No calibration or batteries required. I use about an inch at a time.

In fact, my pH has tested good so consistently over the years that I usually only test at the beginning of a grow, just to make sure nothing has changed dramatically.

This is the one I use.

I used to use strips, but I was mixing like 8 five gallon buckets at a time and it was a total pain in the ass. They are reliable, but a pen is just quick and easy. Like I said, my last one made it 6 years almost to the day. I think I had to change the batteries once, maybe twice.

 

[Coco-garden]

Damn cheaper then when I got mine and I thought I was getting a great deal

 

[cannabineer]

Open box and pebbles fall out

Are there instructions for calibrating the pebbles?

 

[lusidghost]

Damn cheaper then when I got mine and I thought I was getting a great deal

That is a good deal right now. They were $64 on Amazon about a month ago. I'm not sure if it's global politics or just spring pushing up demand.

 

[lusidghost]

I checked the PH again today and it's still trucking. I'm going to say each day is 70 cents worth, and if it lasts a year then it paid itself off. I'm up to a buck forty.

 

[Coco-garden]

How long do these pens typically last?

 

[lusidghost]

Still working and holding accuracy.

 

[nobighurry]

How long do these pens typically last?

I typically get a year sometimes a little longer before they won't calibrate

 

[lusidghost]

So this pen was reading the 7.0 really well, but when I tried to calibrate it the 4.0 was reading 4.9. Then the calibration failed. The gamble did not pay off. I ordered a new one from Amazon that will be here Sunday.