【Test Record】Benchtop Conductivity Meter DS-70 Series "LAQUA"

Overview

Measurement items

Click here for the dedicated LAQUA website (opens in a new Window)

LAQUA DS-70 series measures Conductivity, Resistivity, Salinity, TDS and Temperature simultaneously and the Model DS-72 complies with industrial pharmacopoeias standard (JIS, USP, EP, JP and CP).

The meters’ auto diagnostic function allows the user to make sure that the instruments will always give high performance and reliable measurements. Fully GLP/GMP compliant, the LAQUA can be connected to an external printer. To ensure traceability all results are recorded together with sample name, user ID and calibration information.

We offer a comprehensive range of conductivity electrodes adapted to all type of application and sample. Recognised for their stability and longevity, HORIBA’s electrodes provide accurate measurement in all conditions.

Click here to see our conductivity electrodes

Features

LAQUA’s large capacitance touch screen panel:

Display easy to understand value and functions menus
Switch between digital real time graphs or analogue displays during measurement with just the flick of a finger.
Full on-screen support on the meter via an electronic user guide with colour pictures that can be called up at any time, featuring problem solver guide for calibration or measurement.

Functions

Easy navigation for main unit and electrode inspections.(DS-72)
Full support for various country pharmaceutical pure water guidelines(USP/EP/JP/CP)(DS-72)
Customizable auto-hold function for calibration and measurement (DS-72)
Simultaneous connection to a GLP/GMP compatible and PC
Degital memory:Maximum 2,000 sets of measurement data can be recorded (DS-71:999)
USB-PC communication (DS-71/72) and USB memory (DS-72)
Multi-language support(Japanese, English, Chinese, Korean) (DS-72)
FDA 21 CFR Part11 (Please ask for quotation)

Manufactured by HORIBA

Specifications

		D-71	D-72
Conductivity	Measurement method	2 AC bipolar method
	Measurement range (Display range)	Cell constant 100 m^-1：0.000 mS/m~19.99 S/m Cell constant 10 m^-1：0.0 μS/m~1.999 S/m Cell constant 1000m^-1：0.00 mS/m~199.9 S/m
	Resolution	0.05% of full scale
	Repeatability	±0.5% ±1 digit
	Change unit	○	○
	Distilled water temperature conversion	○	○
	Periodical check	×	○
	P/EP/USP/CP Pharmaceutical water aplication	×	○
Salinity	Measurement method	Conversion from conductivity value
	Measurement range (Display range)	0.00～80.00 PPT(0.000%～8.000%)
	Resolution	0.01 PPT(0.001%)
	Salt concentration calibration	○	○
Resistivity	Measurement method	Conversion from conductivity value
	Measurement range (Display range)	Cell constant 100 m^-1：0.00 Ω・m~199.9 kΩ・m Cell constant 10 m^-1：0.0 Ω・m~1.999 MΩ・m Cell constant 1000 m^-1：0.000 Ω・m~19.99 kΩ・m
	Resolution	0.05% F.S.
	Repeatability	±0.5%F.S.±1 digit
TDS	Measurement method	Conversion from conductivity value
	Measurement range (Display range)	0.01 mg/L ～100 g/L	0.01 mg/L ～1000 g/L
	Resolution	0.01 mg/L
Temperature	Measurement range	0.0～100.0℃(-30.0～130.0℃）
	Resolution	0.1℃
	Repeatability	±0.1℃±1 digit
Input/output	Input(CH)	1	1
	USB peripherals (Communication with PC)^*1	○	○
	USB host（USB memory)	×	○
	RS-232C(Printer/PC)	○	○
	Analog out put	×	○
Data	Memory number	999	2,000
	Interval memory	○	○
	ID input	○	○
	Data search	×	○
Display	Display	Custom LCD	Color graphic LCD with capacitive Touch Panel
Display	Multilanguage display	×	Japanese/English /Chinese/Korean
Function	Navigation function	×	○
	User gide	×	○
	Graf display	×	○
	Printer connectivity（GLP/GMP）	○	○
	Custom printing function	×	○
	Temperature compensation（Auto/manual)	○	○
	AutoHold function	○	○
	AutoHold setting	×	○
	Register operator	×	○
	Security(pass word）	○	○
	Version up function	○	○
Ambient temperature		0 ℃ ～ 45℃
Power		AC adaptor 100 ～ 240 V 50/60 Hz
Demensions		170(W)×174(D)×73(H)mm(Excluding electrode stand and AC adaptor)
Power consumption		Approx. 0.7 VA	Approx. 9.8 VA
Mass of main unit		Approx .500 g	Approx. 700 g

*1 USB cable sold separately. Software can be download by web registration.

Schematics