Specifications

22
Accessories
(Options)
NTT-2200P Constant-Temperature
Water Circulator
(P/N 208-97263)
Circulates temperature-controlled water to a constant-temperature cell holder.
• Temperature range: Ambient + 15 °C to + 80 °C
• Temperature control precision: ± 0.05 °C or more
• Circulation pump: maximum ow rate 27/31 L/min; maximum lift 9.5/13 m (50/60 Hz)
• External circulation nozzle: 10.5 mm O.D. (both outlet and inlet)
• Tank capacity: About 10 L (9 L during use)
• Safety features: Detection of abnormal temperature outside the upper and lower limit
range, Detection of heater wire malfunction, Protection from heating too little circulating
water, Detection of sensor malfunction, Independent over-heat protection, Over-current
circuit protector
• Standard accessories: Lid with handles, 4-m rubber hose (inner diameter: 8 mm; outer
diameter: 12 mm; 1 pc), hose clamps (4 pcs), instruction manual (Japanese and English)
• Dimensions: W270 × H560 × D400 mm
• Power requirements: 100 VAC, 1250 VA, with 1.7-m power cord and grounded plug
Sipper Unit
Sipper Unit 160L (Standard Type)
Sipper Unit 160T (Triple-Pass Type)
Sipper Unit 160C (Constant-Temperature Type)
Sipper Unit 160U (Supermicro Type)
P/N Standard Sample VolumeModel
206-23790-91
206-23790-92
206-23790-93
206-23790-94
2.0 mL
1.5 mL
2.5 mL
0.5 mL
Four types of sipper units with different ow cell types are available.
The stepping motor-driven peristaltic pump ensures reliable and smooth
aspiration of sample solution.
(Direct driving is possible from the UV-2600/2700, so no interface is required.)
(Note)
The use of a Solenoid Valve (uoropolymer) (P/N 204-06599-01) and the SWA-2 Sample
Waste Unit (P/N 206-23820-91) are recommended when strong acids, strong alkalis, or
organic solvents are to be measured.
Syringe Sipper
Syringe Sipper N (normal temperature type)
Syringe Sipper CN (constant temperature, water circulator type)
P/N
Model
206-23890-91
206-23890-92
The sipper unit employs a syringe-pump system. The liquid-contact surfaces are
composed of uoropolymer, glass, and quartz, imparting excellent chemical
resistance and ease of maintenance, and allowing measurement of almost any
sample type. Furthermore, the extremely high repeatability of sipping volume
(repeat precision: ± 0.03 mL) makes it ideal when performance validation is
required.
(Note) Flow cell available separately. Choose from the recommended ow cells listed below.
Square (ultra-micro)
Square (micro)
Square (semi-micro)
208-92114
208-92113
208-92005
10 mm
10 mm
10 mm
ø2 mm
ø3 mm
H11 × W3.5 mm
P/N
Optical
Path Length
Dimensions
of Aperture
Standard Required
Sample Volume
Recommended Flow Cells
0.9 mL
1.0 mL
5.0 mL
Cell Type
• The type of ow cell can be selected in accordance
with the application.
• The ow cell can be changed independently for
excellent ease of maintenance.
• Circulated-water temperature range: ambient to
60 °C (CN type)
(Note)
If a square ow cell (micro or supermicro) is used,
attaching mask R (P/N 206-88679) to the reference cell
holder is recommended to balance the light intensity.