Z900 Algal Online Monitor is a flow through, portable and robust device for online detection and continuous monitoring of photosynthetic microorganisms in both natural and artificial water bodies. It detects and discriminates among variety of cyanobacteria, green and brown algae, diatoms, and other microbes. Its ultra-high sensitivity (30 ng Chl/l) allows early detection of very low concentrations of these organisms.

Measured / Calculated Parameters:

• FT : Instantaneous Fluorescence
• QY: Quantum Yield
• OJIP – Fix Area: total area above the OJIP fluorescence transient. This parameter correlates with total change of fluorescence signal in OJIP protocol, with total pigment content and hence with cell concentration.
• OD measurements at 680 and 720nm

Features:

• Ultra-high sensitive, flow-through monitoring.
• Detection limit 30 ng Chl/l.
• Wide range of detected organisms: cyanobacteria, green and brown algae, diatoms, and other microorganisms.
• Variable excitation colors.
• Turbidity measurement.
• Device modifications for phycoerythrin or phycocyanin (optional).
• Ability to activate alarms/pumps when threshold values of measured parameters are reached
• rugged construction for field use

Applications:

• Water treatment monitoring.
• Early detection of potentially harmful algae blooms.
• Effective control of water treatment chemicals.

FluorPen 1.0 Software

• Real-time data collection for online measurements.
• Both internal data storage and external communication.
• Data export to Excel for analysis or visualization applications.
• Windows 2000* and Windows XP* compatibility.

FluorPen graph and data window

Technical Specification:

• Measured Fluorescence Parameters: FT, QY, OJIP – Fix Area
• Detection Limit: Algae – 10 cells/ml, Cyanobacteria – 100 cells/ml
• Actinic and Saturating Light Intensity: Adjustable from 0 to 3,000 µmol(photons)/m².s
• Measuring Light Intensity: Blue (455 nm) and red (630 nm) measuring light adjustable by intensity, Blue (455 nm) and amber (590 nm) measuring light adjustable by intensity
• Detector Wavelength Range: PIN photodiode with 660 nm – 750 nm bandpass filters
• Sample Compartment: Flow-through cuvette made of quartz glass
• FluorPen 1.0 Software: Windows 2000, XP or higher
• Bios: Upgradeable firmware
• Communication: Serial RS 232, RS 485
• Display: AOM 2800: 2 x 16 characters LC display, AOM 2700: without display
• Memory Capacity: 4 Mb – up to 100,000 data points (about 300 OJIP curves)
• Power Supply: 24 V (optionally 12 V)
• Power Saving Mode: Automatic
• Case: IP65
• Temperature Range: 0 to 45 ºC
• Dimensions: 20 x 23 x 11 cm
• Weight: 3.4 kg

Qubit’s S165 pH Sensor can be substituted for any traditional pH meter. The advantages are trifold: automated data collection, graphing and data analysis using the C410 LabPro Interface and C901 Logger Pro Software. For field work, it can be used with a Palm hand-held computer and C915 Palm/Data Pro software.

• materials: Sealed, gel-filled, epoxy body, Ag/AgCI
• Response time: 90% of final reading in 1 second
• Temperature range: 5 to 80^oC
• 12 mm Outer Diameter
• pH range: pH 0 – 14
• 12 bit resolution (with LabPro Interface) 0.005 pH units
• Isopotential pH:  pH 7
• Output: 59.2 mV/pH at 25^oC
• warranty : 2 years

The pH sensor is factory-calibrated. If re-calibration is required, it is a simple two point procedure using buffer solutions. Qubit can supply a buffer kit including 4 tablets each of buffer pH 4, 7, and 10. Each tablet is added to 100 mL of distilled water to prepare respective pH buffer solutions.

Applications include:

• Acid-base titrations
• Investigations of acid rain and buffering
• Investigations of water quality in streams and lakes
• Monitoring pH change during chemical reactions
• Monitoring pH changes in an aquarium as a result of photosynthesis

D950 Waste Water Respirometry System is a single or multi-channel systems for automated respirometric measurements of activated sludge or waste water samples.

Fiber optic oxygen sensing technology with online temperature compensation and control, provides unbeaten temporal resolution and precision of data.

Particularly good for research, diagnostics or process optimization.

Oxygen optodes (sensors) are unaffected by stirring, pressure, CO2, H2S, ions, solutes etc. – no cross-sensitivity or poisoning.

User-friendly software and USB instrumentation for effortless operation, sensor calibration, data acquisition, calculations, graphs, analysis and statistics.

Applications:

• OUR (oxygen utilization rate)
• Short-term BOD (biological oxygen demand)
• Activated sludge analysis
• Waste water analysis
• Respiration inhibition
• Toxic effects of influents
• Laboratory respirometry
• Substrate/feed/nutrient effects
• Sludge monitoring
• Oxygen and temperature measurements and regulation

Included (single channel system):

• Data acquisition instrument for USB interface
• AutoResp™ software for Windows
• Fibox 3 fiber optic oxygen instrument for mini sensors
• Fiber optic oxygen mini sensor
• Water temperature monitoring and control system
• Oxygen analyzer and regulator system
• User manual

Optional:

• Customer specified chambers/reactors made in glass, stainless steel or plastic materials
• Multichannel temperature controllers for independent monitoring and regulation of samples
• Stirrers, hotplates, refrigerated baths

Specifications:

• Operational modes: cyclic or triggered by O2 set points (min/max)
• Data resolution: 16-bit (full optical insulation)
• Sampling frequency: 1 Hz (1-channel); 2 Hz (4-channel)
• Sensor response time: <20 sec (T90)
• Sensor accuracy: 1% air sat.
• Calibration: 2-point (sodium sulphite or N2, and air/O2)
• Files: txt and csv (Excel)
• PC interface: USB
• OS: WinXP/Vista/Win7
• Power: 110V/60Hz or 230V/50Hz