Electrode Family	ROSS  Ultra	ROSS	PerpHecT ROSS	PerpHecT Ag/AgCl	Standard Electrodes	AquaPro	Micro	Double Junction	Economy
pH Precision	0.01	0.01	0.01	0.01 to  0.05	0.02	0.02	0.02	0.02	0.05 to 0.1
Sample
General Purpose Most Samples	8102BNUWP 8156BNUWP	8102BN 815600 8172BNWP	8202BN 8256BN 8272BN	9202BN 9256BN 9272BN	9102BNWP 9107BNMD 9157BNMD	9102AP 9107APMD 9156APWP	8220BNWP	9102DJWP	9106BNWP 9142BN 9146BN
Biological/        Pharmaceutical Protein, Tris, Enzymes	8102BNUWP 8156BNUWP	8102BN 8165BNWP 8172BNWP	8202BN 8256BN 8272BN	9272BN	9165BNWP 9172BNWP	9102AP 9107APMD 9156APWP	8220BNWP	9102DJWP 9110DJWP 9156DJWP	-
Education Student Use	8156BNUWP	815600 8165BNWP	8256BN	9206BN 9207BN 9256BN	9107BNMD 9156BNWP 9157BNMD	9104APWP 9156APWP	8220BNWP	9156DJWP	9106BNWP 9142BN 9146BN
Emulsions Food Cosmetics, Oils	-	8165BNWP 8172BNWP	8272BN	9272BN	9165BNWP 9172BNWP	9102AP 9107APMD 9156APWP	-	9102DJWP 9110DJWP 9156DJWP	-
Petroleum Products Paint	-	8172BNWP	8272BN	9272BN	9172BNWP	9104APWP	-	9102DJWP 9110DJWP	-
Extreme pH pH>12 or <2	-	8165BNWP 8172BNWP	8272BN	9272BN	9165BNWP 9172BNWP	9102AP 9103APWP 9104APWP	-	9102DJWP 9110DJWP	-
Flat Surfaces Food, Cheese, Paper, Agar	8135BNUWP	8135BN	8235BN	-	9167SC	9135APWP	-	-	913600
Harsh Environments Field or Plant Use	8156BNUWP	815600 8165BNWP	8256BN	9206BN 9207BN 9256BN	9107BNMD 9156BNWP 9165BNWP	9104APWP 9156APWP	-	9156DJWP	9106BNWP 9146BN
Rugged Use	8104BNUWP 8156BNUWP	8104BN 815600 8165BNWP	8256BN	9206BN 9207BN 9256BN	9104BNWP 9107BNMD 9157BNMD	9104APWP 9115APWP 9156APWP	-	9156DJWP	9106BNWP 9146BN
High Ionic Strength Acid, Bases, Brines	-	8165BNWP 8172BNWP	8272BN	9272BN	9165BNWP 9172BNWP	9102AP 9104APWP 9156APWP	-	9102DJWP 9110DJWP 9156DJWP	-
Tall Flasks or Bottles	-	-	-	-	-	-	9826BN	-	912600
Low Ionic Strength Treated Effluent	8102BNUWP	8102BN 8165BNWP 8172BNWP	8202BN 8272BN	9202BN 9272BN	9102BNWP 9165BNWP 9172BNWP	-	-	-	-
Non-Aqueous Solvent, Alcohols	-	8165BNWP 8172BNWP	8272BN	9272BN	9172BNWP	9104APWP	-	9102DJWP	-
Semi-Solids FruIt, Meat, Cheese	-	8163BNWP	8163BNWP	-	9163SC	9135APWP	-	-	-
Small samples Test Tubes, Small Flasks	8103BNUWP	8103BN 8115BN 8175BNWP	8203BN 8235BN 8163BNWP	9203BN	9163SC	9115APWP 9135APWP	8220BNWP 9802BN 9803BN	9110DJWP	911600 912600
NMR Tubes	-	-	-	-	9103BNWP 9167SC	-	8220BNWP 9826BN	-	-
Micro-titer plates	-	-	-	-	-	-	8220BNWP 9826BN	-	-
Titration	-	8162SC	-	-	9164SC 9166SC	-	8220BNWP	-	-
Viscous Slurries, Suspended Solids	-	8165BNWP 8172BNWP	8272BN	9272BN	9165BNWP 9172BNWP	-	-	-	-
Waters Acid Rain, Boiler Feed Distilled, Rain, Well	8102BNUWP	8102BN 8165BNWP 8172BNWP	8202BN 8272BN	9202BN 9272BN	9102BNWP 9165BNWP 9172BNWP	9102AP 9104APWP 9156APWP	8220BNWP	9102DJWP 9110DJWP 9156DJWP	-
Drinking Tap Water	8102BNUWP 8104BNUWP	8102BN 8165BNWP 8172BNWP	8202BN 8272BN 8256BN	9202BN 9206BN 9207BN	9102BNWP 9165BNWP 9172BNWP	9102AP 9104APWP 9156APWP	8220BNWP	9102DJWP 9110DJWP 9156DJWP	9106BNWP 9146BN
Sea Water	-	8165BNWP 8172BNWP	8272BN	9272BN	9165BNWP 9172BNWP	9102AP 9104APWP 9156APWP	-	9102DJWP 9110DJWP 9156DJWP	-
Waste Water	-	8165BNWP 8172BNWP	8272BN	9207BN 9272BN	9107BNMD 9157BNMD 9165BNWP	9102AP 9104APWP 9156APWP	-	9102DJWP 9110DJWP 9156DJWP	9106BNWP 9146BN