1. HORIBA Portable Meter Line-uppH ○
ORP
Conductivity
ISE
DO (O2)
Resistivity
Salinity
Temperature
Turbidity
Depth
TDS
SSG

2. HORIBA Benchtop Meter Line-uppH ○ mV
Conductivity
Resistivity
Salinity
ISE
Temperature
Navi function

3. HORIBA Pocket Meters

4. TWIN Series (pH, Conductivity)
Pocket-size HORIBA flat sensor meter.
TWIN pH meter is waterproof, suitable for lab and field use.
Replaceable sensor. pH
Conductivity

5. Cardy Series (Salt, NO3-, K+, Na+)
HORIBA flat sensor technology is available in pocket-size.
World’s only pocket-size Ion meter for lab, agriculture, food, environmental study, etc.
Sensor replaceable.
Ion

6. HORIBA Portable Meters

7. OM series (OM-51-2/-10/-lab)
Portable single parameter meter to measure Dissolved Oxygen.
No optional unit necessary for RS-232C, AC or printer connection.
Compact design, larger LCD with IP67 rated waterproof realizes easy use in the field
Data storage up to 300 sets with time stamp. DO O2
Temperature

8. ES-50 series (ES-51)
Portable single parameter meter to measure Conductivity.
No optional unit necessary for RS-232C, AC or printer connection.
Compact design, larger LCD with IP67 rated waterproof realizes easy use in the field
Data storage up to 300 sets with time stamp.
Conductivity
Resistivity
Salinity
Temperature

9. D-50 series (D-51,52,53,54,55)
Portable Multi-Parameter meter to simultaneously measure pH and ORP/Ion/Conductivity/DO.
No optional unit necessary for RS-232C, AC or printer connection.
Compact design, larger LCD with IP67 rated waterproof realizes easy use in the field
Data storage up to 300 sets with time stamp. pH
ORP
Ion
Conductivity DO
Temperature

10. U-20 series (U-22, W-22/23)
Portable Multi-Parameter meter to simultaneously measure up to 13 water quality parameters.
Cable length up to 100 m with waterproof rating of IP67
One-touch calibration makes work easy
Up to one month monitoring
Heavy-duty probe fits into 2-inch well. (flowcell option available)
Expandability to printer, RS-232 and GPS unit pH
ORP
Ion
(select 3 from 6 options)
Conductivity DO
Temperature
Salinity
Seawater
Specific
Gravity
Turbidity
TDS
Depth

11. Benchtop Meters

12. DS-50 series (DS-51, DS-52)
Benchtop single parameter meter to measure Conductivity
RS-232C output standard
Battery operation possible for portability.
D-52 with color display and navigation features
Conductivity
Resistivity
Salinity
Temperature

13. F-50 series (F-51BW, 52, 53, 54, 54BW, 55)
Extended GLP/GMP compliance with World’s First meter to comply 21CFR Part11 requirements.
World’s First benchtop meter with color LCD display
World’s First meter with Compact Flash interface.
User friendly navigation features full of HORIBA’s 50 years experience
Meter checker available to verify meter performance
RS-232C output standard for all models.
Battery operation possible for portability. pH
ORP
Ion
Temperature
Conductivity
Resistivity
Salinity

14. HORIBA Sensor Technology

15. Ag+ Trap Technology ToupHer Design New ToupH Series Electrode
HORIBA Introduced ToupH D electrode
2003 HORIBA Introduces ToupH family with…
Ag+ Trap Technology
No Ag+ spill, long lasting
ToupHer Design
Shorter and wider

16. Ag+ Trap Technology No Ag+ spill, long lasting Slow Response
Ion exchange material traps Ag+ and prevents Ag+ from spilling into the internal solution
Ag+ within the internal solution
saturates and clogs the liquid junction
Slow Response
Ag+ Contaminates sample
Maintained Fast Response
No Ag+ Contamination
　New
Former
KCl Internal
Solution
Ag/AgCl
Electrode
KCl Internal
Solution
Ag/AgCl
Electrode
Pin hole to
Teflon Coating
Ion exchange material
Pin hole to
Teflon Coating
Liquid
Junction
Liquid
Junction

17. 3 months monitoring in Protein Sample
Ag+ Trap Technology
3 months monitoring in Protein Sample
Conventional
New
Initial
3 months
Repeatability
pH4
0.02
0.01
pH7
0.03
pH9
0.11
0.04
Sensitivity (%)
pH4 to pH9 99 86 98
Tap Water
T90 14
327 11 32
Liquid Junction
Color
White
Black

18. The response is 40 times faster
Ag+ Trap Technology
3 months monitoring in Tap Water
The response is 40 times faster 10 5 mV
Conventional -5
New
-10
300
600
900
1200
1500
1800
time(s)

19. ToupHer Design Conventional New
Shorter and Wider
Conventional
New
11mm
15mm
φ6mm
φ8mm
Strength increased by 4.4 times more than former ToupH electrode. Doesn’t break from 1m height.
Now stronger against impact from all sides
Requires less sample volume
Available as ToupH Family: General purpose, Sleeve and Micro pH electrodes

20. Electrode Comparison HORIBA vs. Accumet (13-620-285) Response
Internal solution
Reference
Ion trap
KCL
Ag/AgCl
Yes
ToupH Design
G pole and R pole are on the same height
Fisher
Internal solution
Reference
Ion trap
KCL
Ag/AgCl No
No specific design for durability
G pole and R pole are on a different height
Response
Due to no solution made for Ag+ spill, the response time will become slow in a few months.
Strength
Not a durable design, breaks from 10cm height.
Temperature accuracy for pH measurement
Temperature detected at G pole and the actual temperature at R pole may differ →unreliable pH value

21. Electrode Comparison HORIBA vs. Mettler Response
Internal solution
Reference
Ion trap
KCL
Ag/AgCl
Yes
ToupH Design
Humidity secured with the sealed cap
Mettler
Internal solution
Reference
Ion trap
KCL
Ag/AgCl
Yes
Durable Design
Soaked in KCl filled cap
HORIBA
Stabilizes in
3 minutes
Response
Due to the storage in KCl solution, response against tap water is very slow.
METTLER
Stabilizes in
9 minutes
*Stabilization: Within 0.01pH drift in 1 minute

22. Electrode Comparison HORIBA vs. ORION (8202, 8272) Strength
Internal solution
Reference
Ion trap
KCL
Ag/AgCl
Yes
ToupH Design
Stable temperature readings
ORION
Internal solution
Reference
Ion trap KI Pt No
No specific design for durability
No temperature sensor 5
5.5 6
6.5 7
7.5 8 pH
HOR9611
ORION8202
ORION8272
40℃
2 days
Room temp.
1 hour
Room Temp.
Initial
Strength
Not a durable design, breaks from a certain height.
Stability
pH value drifted by 0.5 pH when applied temperature drift test.
0.5pH

23. Electrode Comparison Summary HORIBA METTLER ORION FISHER WTW Glass
TOADKK
METTLER
ORION
FISHER
WTW
#9611
#9610
GST-
InLab
410
InLab
413
8202
8272
SenTix61
Sentix20
(new)
(old)
5731C
285
ROSS/
Accumet
Strong･pH
ROSS
Sure-Flow
standard
Glass
Strong･
Superior
Superior
ToupH
ToupH
electrode pH
durability
durability
Feature
Filling
Reference
Silver
Silver
Solid
Platinum
solution
Filter
polymeric
Gel
electrode
ion trap
ion trap
electrode
saturated
electrolyte
with Ag
Tap water response ◎ × ◎ × × ○ ◎ × × ×
(after three months)
Durability ◎ ○ ○ ◎ × △ △ × ◎ ×
Ranking
No.1
No.7
No.2
No.3
No.8
No.5
No.3
No.8
No.5
No.8

24. World’s smallest w/temp. sensor
Micro ToupH ( D)
World’s smallest w/temp. sensor
1.　No sample contamination
In the past…
Internal solution ooze out from
Liquid junction, contaminating the sample
Ag+ Trap Technology
No contamination!
2.　Unbreakable
ToupH Design
Strength even breaking the beaker!
In the past…
Electrode hit stirrer or beaker and broke
3.　High Precision
Built-in Temperature Sensor
Reliable measurement!
In the past…
Calibration in room temperature
→measurement at 37℃
pH0.1 error against pH4 solution
4.　For microvolume or Precious samples
In the past…
Enough volume of precious or large container has to be prepared
3mm diameter sensor
Requires only 0.3ml of your sample

25. Ideal for viscous or slurry sample
ToupH Sleeve ( D)
Ideal for viscous or slurry sample
1.　No sample contamination
In the past…
Internal solution ooze out from
Liquid junction, contaminating the sample
Ag+ Trap Technology
No contamination!
2.　Unbreakable
ToupH Design
Strength even breaking the beaker!
In the past…
Electrode hit stirrer or beaker and broke
3.　Works with difficult samples
In the past…
Hard to measure viscous sample (does not come in contact with liquid junction) or slurry sample (clogs the liquid junction)
Slurry Design
Viscous sample still contacts with liquid junction, cleaning is also easy

26. Ideal for food measurement
ISFET Electrode ( D)
Ideal for food measurement
1.　Easy maintenance
・No need to replace or refill KCl internal solution
・Just replace a tip when sensor is consumed
Easy to use
2.　Ideal for food measurement
・Food additives (CMC, Glycerine, KCl) is used for internal solution
･Glass will not break into sample (food)
・Tip design allows for easy sample entry
For meat and fruit
3.　Minimize running cost
・Replaceable tip makes it economical and environmentally friendly.
Just replace the tip!

27. Optional Products Cleaning Reagent
Model #220
10% Thiourea, 1% HCl
Effective for liquid junction cleaning, removing contamination from inorganic sample
Over 50% of electrodes recovers, based on HORIBA experience.
Digital Simulator
Model X-51
Digital Simulator
Model X-52
Checks meter performance
Gives simulation signal to the meter
(for pH, mV, Ion, DO check )
Checks meter performance
Gives simulation signal to the meter
(for Conductivity check )
Electrode Stand
For Portable meters
AC Adatper
For Portable meters
Ink Printer
For GLP/GMP compliance