where can I find a high resolution pH meter?
372132
www.hannainst.co.uk\nwww.bestlabdeals.com\nwww.ph-measurement.com \nga.water.usgs.gov/edu/phmeter.html \nwww.dartmouth.edu/~chemlab/techniques/phD.html \nwww.lce.org/equipment/phmeter/phoper.html\nwww.testequipmentdepot.com\nwww.QAsupplies.com\nwww.eutechinst.com\nwww.tlead.net\n\nNeed any more ask again
233941
http://pqasb.pqarchiver.com/skyandtelescope/advancedsearch.html
942504
should be a ph of 9.3
695914
Chemical laboratory supply houses carry it.  Try Alfa Aesar, they have it:\n\nhttp://www.alfa.com
1098425
ph meters are designed to check the power of Hydrogen in a substance. The scale runs from 1 (extreme acid) to 14 (extreme caustic). You cannot check the concentration of a a substance, such as how much acid or caustic is ion a solution. To find that, you have to titrate for the concentration.
477933
Check out the link below:\n\nhttp://www.respiratorygroup.com/products/high_pressure/med_o2_spec.aspx
317042
www.chemfinder.com might help
844268
how were you measuring the pH? if it was a pH meter maybe it wasn't calibrated correctly/ recently?? or if it was with litmus paper.... maybe it went bad? I'm not sure if it can... check and see if there could have been an expiration date. i don't think temperature would have that drastic of an effect unless you did the experiment at pH7 and a seriously high (like about 60C) temp and the other ones at room temp or 37C (body temp)... sorry i cant help anymore then that, that's very strange!
57350
Well for your information i would like to tell you that the pH value of lemonn is 2.5. Still if you wold like to find out, you could use either pH strips which indicate a pH  range to you or use a pH meter. This will give you the exact pH value. All the best!!
280904
Do a search for 'barometers'\n\nAll I got was 'potassium tetraiodomercurate(II)' but I have never heard of and have no idea if thats what you are looking for ;O)
1122499
pH = pKa - log (.25/.4) ~= 4.3
991807
uh a pH meter will help with the hydrogen iodide because it's a strong acid.  As for the I2 I have no idea...
140136
Here's a study guide.  http://www.doctronics.co.uk/meter.htm
54482
Try http://www.aspfaq.com/show.asp?id=2362
244907
There is a product you can get over the counter called boil-ease. Ask your local pharmacist if they carry it.
699777
http://en.wikipedia.org/wiki/PH
602416
http://www.scienceaid.co.uk/titration.html