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Two different Hanna Checkers?
- Thread starter MPL
- Start date
I admit I'm too skeptical to trust pens. Especially Hanna's. In my unofficial survey of pens and meters, the best of them were a complete crapshoot and Hanna routinely came in at the bottom of the barrel. That said, the red one looks suspiciously like a soil tester.
The bad thing about both of those meters is that they are not waterproof...
they get ALL fucked up when you drop them in the water... that shit happens to the best of us even if you think you are careful, it happens...
i have successfully grown using those cheap meters, but i went through about 3 of them in my horticultural career. My advice is to spend the money and buy a meter with a corded probe and all functions such as PH, TDS, TEMP, EC... they are a little more expensive, but they usually come with a warranty and they are very easy to calibrate IF anything goes wrong...
http://cgi.ebay.com/Hanna-HI991301-...ryZ43555QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
they get ALL fucked up when you drop them in the water... that shit happens to the best of us even if you think you are careful, it happens...
i have successfully grown using those cheap meters, but i went through about 3 of them in my horticultural career. My advice is to spend the money and buy a meter with a corded probe and all functions such as PH, TDS, TEMP, EC... they are a little more expensive, but they usually come with a warranty and they are very easy to calibrate IF anything goes wrong...
http://cgi.ebay.com/Hanna-HI991301-...ryZ43555QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
LiLWaynE said:
ive never droped my pens into the water
would suck though, cuz there not waterproof.
OW! That hurt. Why are you telling him to hit me in the head? I thought you were my friend ...LiLWaynE said:
This has only gotta last me through one or two grows. I don't have a ton of cash at this moment but things should be improving soon. I think I'll get the white one. It looks better, if nothing else. lol
MPL
Member
Just noticed that, and you're right, except it's vice versa. The 99104 (white) has a resolution of 0.01 pH, and the 98103 (red) has a resolution of 0.1 pH. I suppose that is why the battey in the white one doesn't last as long.
Thanks for pointing that out. I had compared the two many times and that just slipped by my eyes like a stealth bomber. How dumb am I?
lol
Thanks for pointing that out. I had compared the two many times and that just slipped by my eyes like a stealth bomber. How dumb am I?
lolblynx said:
G
Guest
The resolution of the meter isn't it's accuracy. It's easy to add digits to a readout; they're cheap. It's harder to build a probe/meter head that's accurate to the degree the digits can be added to that readout. However further readout digits are an indicator of which direction the actual measurement is headed.
If you drop any meter of any kind into water, if you take it out, remove the batteries and the screws from the case, and soak it in distilled water, it'll fix it. Electronics aren't harmed by water; they're harmed by the conductive minerals therein.
When electronic boards are manufactured, there is solder flux all over everything. The flux isn't harmful; it's pH neutral and non conductive, but it creates quality control problems later, in troubleshooting the piece built, because it can't be visually inspected. It also creates leakage of that flux if the board's used in warm environments, and the flux liquifies.
To clean freshly assembled electronic components, the most common method for smaller manufacturers is to soak them in tap water and dishwashing detergent, then scrub them with a brush; then, rinse them well with distilled water to remove remaining mineral content, and dry. Drying is typically done with warm, moving air.
If you drop any meter of any kind into water, if you take it out, remove the batteries and the screws from the case, and soak it in distilled water, it'll fix it. Electronics aren't harmed by water; they're harmed by the conductive minerals therein.
When electronic boards are manufactured, there is solder flux all over everything. The flux isn't harmful; it's pH neutral and non conductive, but it creates quality control problems later, in troubleshooting the piece built, because it can't be visually inspected. It also creates leakage of that flux if the board's used in warm environments, and the flux liquifies.
To clean freshly assembled electronic components, the most common method for smaller manufacturers is to soak them in tap water and dishwashing detergent, then scrub them with a brush; then, rinse them well with distilled water to remove remaining mineral content, and dry. Drying is typically done with warm, moving air.
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Y
yamaha_1fan
I agree with Kingmaker to a certain degree. I have literally washed many circuits boards with a garden hose, then let them dry. These boards had ink all over them. Never had a problem after they dried for 3 days.
The only thing I see being a problem is if the pen is on when its dropped in the water, and water getting inside and causing a short. If you can get it turned off before anything is damaged, then you should be able to clean it.
The only thing I see being a problem is if the pen is on when its dropped in the water, and water getting inside and causing a short. If you can get it turned off before anything is damaged, then you should be able to clean it.
