Campionatore di profondità dell'acqua

Water Quality with Vernier has 18 water quality tests, including pH, total dissolved solids, dissolved oxygen, BOD, flow rate, turbidity, nitrates, and phosphates. All nine tests in the Water Quality Index (WQI) are supported. A comprehensive introduction is included for each test, providing important background information for the students. The printed version includes access to the electronic edition online.  

The Conductivity Probe determines the ionic content of an aqueous solution by measuring its conductivity. The Conductivity Probe has three ranges, providing optimal precision in any given range. Biology teachers can use this probe to demonstrate diffusion of ions through membranes. Chemistry students are able to quickly investigate the difference between ionic and molecular compounds, strong and weak acids, or ionic compounds that yield different ratios of ions. Environmental science students use it to measure TDS, total dissolved solids. Range: Low Range: 0 to 200 μS/cm (0 to 100 mg/L TDS) Mid Range: 0 to 2000 μS/cm (0 to 1000 mg/L TDS) High Range: 0 to 20,000 μS/cm (0 to 10,000 mg/L TDS) Typical Resolution: Low Range: 0.1 μS/cm (0.05 mg/L TDS) Mid Range: 1 μS/cm (0.5 mg/L TDS) High Range 10 μS/cm (5 mg/L TDS) Accuracy using factory calibration: ±8% of full-scale reading for low range ±3% of full-scale reading for mid range ±4% of full-scale reading for high range Accuracy using custom calibration: ±2% of full-scale reading for each range Response Time: 98% of full-scale reading in 5 seconds, 100% of full-scale in 15 seconds Temperature Compensation: automatic from 5 to 35 °C Temperature Range (can be placed in): 0 to 80 °C Cell Constant: 1.0 cm-1 Description: ABS body, parallel carbon (graphite) electrodes Dimensions: 12 mm OD and 150 mm length   CON-BTA User manual

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity. It directly connects wirelessly via Bluetooth® or wired via USB to your platform. Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity. It features a built-in temperature sensor to simultaneously read conductivity and temperature. Automatic temperature compensation allows students to calibrate the probe in the lab and then make measurements outdoors without temperature changes affecting data. This temperature compensation can be turned off to perform conductivity studies as a function of temperature. The Go Direct Conductivity Probe has a range of 0 to 20,000 μS/cm to provide optimal precision in any given range. An alternating current at its electrodes prevents polarization and electrolysis, reducing contamination of solutions. Its ABS-body graphite electrode resists the corrosion typical in metal electrodes. The Go Direct Conductivity Probe can be used in a variety of experiments: Demonstrate diffusion of ions through membranes. Investigate the difference between ionic and molecular compounds, strong and weak acids, or ionic compounds that yield different ratios of ions. Measure Total Dissolved Solids (TDS). Specifications: Range: 0 to 20,000 μS/cm (0 to 10,000 mg/L TDS) Temperature compensation: Automatic from 5 to 35°C, can be turned off Temperature range (can be placed in): 0 to 80°C Cell constant: 1.0 cm-1 Description: ABS body, parallel carbon (graphite) electrodes Dimensions: 12 mm OD and 120 mm length Connections: Wireless: Bluetooth Wired: USB Included Go Direct Conductivity Probe Micro USB Cable

Utilizzate il sensore di pH proprio come fareste con un pHmetro tradizionale, con i vantaggi aggiuntivi della raccolta automatica dei dati, della creazione di grafici e dell'analisi dei dati. Le attività tipiche che utilizzano il nostro sensore di pH includono: Titolazioni acido-base Studi sugli acidi e le basi per uso domestico Monitoraggio delle variazioni di pH durante reazioni chimiche o in acquario come risultato della fotosintesi Indagini sulle piogge acide e sui tamponi Analisi della qualità delle acque di torrenti e laghi Se state studiando tamponi Tris o semisolidi di questo tipo, prendete in considerazione il sensore di pH piatto Vernier Tris-Compatible.

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions. It directly connects wirelessly via Bluetooth® or wired via USB to your platform. The Go Direct pH Sensor is an important and versatile sensor for lab and field activities alike. It gives students the freedom to explore pH without the inconvenience of wires—no more spilled solutions or dangling wires. The Go Direct pH transmits live readings and captures data in real-time. The Go Direct pH Sensor can be used in a variety of experiments: Conduct acid-base titrations. Monitor pH change during chemical reactions. Test the pH and alkalinity of bodies of water. Investigate household acids and bases. This sensor is comprised of a pH electrode connected to a Go Direct Electrode Amplifier via a BNC connector. This design enables you to use the Go Direct Electrode Amplifier with other Vernier electrodes, such as the Flat pH Electrode, ORP Electrode, ISE electrode, or a third-party electrode. Specification: pH range: 0–14 Type: Sealed, gel-filled, epoxy body, Ag/AgCl reference Shaft diameter: 12 mm OD Storage solution: pH-4/KCl solution (10 g KCl in 100 mL buffer pH-4 solution) Connections: Wireless: Bluetooth Wired: USB Included: Go Direct pH (includes Go Direct Electrode Amplifier) Micro USB Cable Quick-start guide 

Go Direct Optical Dissolved Oxygen Probe combina la potenza di diversi sensori per misurare l'ossigeno disciolto, la temperatura dell'acqua e la pressione atmosferica. Ideale per esperimenti in corsi di biologia, ecologia e scienze ambientali, la Go Direct Optical Dissolved Oxygen Probe utilizza la tecnologia luminescente per fornire risultati rapidi, semplici e precisi. Perfetta per il campo o per il laboratorio, questa sonda non richiede alcuna calibrazione, nessuna soluzione di riempimento, nessun tempo di riscaldamento e nessuna agitazione. Questa sonda impermeabile è pronta a campionare immediatamente l'ossigeno disciolto senza ulteriori configurazioni o la necessità di riscaldarlo, in modo da poter dedicare più tempo all'indagine. La sonda di ossigeno disciolto ottico Go Direct può essere utilizzata in una varietà di esperimenti: Indagare la relazione tra la temperatura e l'ossigeno disciolto nell'acqua. Misurare la produttività primaria o la domanda di ossigeno biologico/biochimico. Esplora l'interdipendenza tra piante e animali. Monitorare i bacini idrici nel tempo.