[Easy to Maintain]: The user-friendly design allows for effortless cleaning, with the detachable cage making it simple to keep the bell clean and hygienic.
[Safety First]: Made from healthy and eco-friendly materials, the cage bell features a smooth surface without anyedges, ensuring a high level of safety for your child.
Entertaining Toy: It special a wide array of special and entertaining sound effects for you to choose from. This toy guarantees laughter and will have your friends bursting into fits of giggles.
16 Sound Effects: Simply press a button, and this device triggers conversations with its 16 funny sound effects, including laughter, applause, horn blasts, and more.
[Easy Identification] The package includes a rock identification chart to help distinguish various rocks and minerals, making it simple to classify different rock types.
[Complete Rock Set] The rock collection kit comes with 20pcs rocks individually organized for easy identification. Dive into the world of geology and explore each rock like a true geologist.
Boil this liquid at your body temperature: hold the lower container with your hand, and observe how the liquid boils and rises through the tube to the upper container.
Once leave your hand: it takes a few minutes for the liquid to cool and return to the container below, which is a very interesting science toy and a great demonstration of energy transfer.
[Specimen Information]: The transparent display box in this minerals collection kit makes it easy to identify each rock specimen, with the name clearly labeled underneath, facilitating quicker recognition and learning.
[Parent Child Interaction]: Encourage bonding and create lasting memories with this children's rock collection kit, perfect for solo exploration or sharing with friends and family, fostering valuable experiences through hands-on learning activities.
【Accurate And Stable】With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40℃, and the reading is accurate and stable.
【Pen Type Dissolved Oxygen Meter】Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water.
[ACCURACY INSTRUMENT] DO9100 is an accuracy instrument for measuring dissolved oxygen and temperature. With built in microcomputer processor to calculate and compensate all measurement data related to dissolved oxygen and temperature.
[PROBE] A membrane with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode and allows oxygen to pass through the membrane to react.
AUTOMATIC TEMPERATURE COMPENSATION-----This dissolved oxygen meter with automatic temperature compensation, our product ensures precise and consistent readings regardless of the solution temperature (0-40 ℃).
HIGH ACCURACY AND FAST RESPONSE----Experience fast and accurate testing results. This dissolved oxygen test kit can test liquids ranging from 0.0-40.0mg/L, providing you with reliable data in no time.
【Automatic Temperature Compensation】With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 0-40℃, and the reading is accurate and stable.
【Lightweight Pen Type Meter】Small pen-shaped design, light and easy to move, you can test water anywhere to get the purest water.
[Accuracy Instrument] DO9100 is an accuracy instrument for measuring dissolved oxygen and temperature. With built in microcomputer processor to calculate and compensate all measurement data related to dissolved oxygen and temperature.
[Probe] A membrane with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode and allows oxygen to pass through the membrane to react.
[Accuracy Instrument] Dissolved oxygen meter is a instrument for measuring dissolved oxygen and temperature. The dissolved oxygen probe is a thin film with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode but allows oxygen to pass through the membrane to , and the concentration can be measured.
[Probe] Dissolved oxygen refers to the concentration of molecular oxygen dissolved in water, generally expressed in mg/L (ppm) and saturation percentage (%), which is the percentage of dissolved oxygen in 1L of water. The oxygen concentration of our dissolved oxygen meter is 0.0-40.0mg/L, most of the range of dissolved oxygen meters on the market is 0.0-20mg/L. When measuring and calibrating, needn't open the protective cover of the electrode, just put the electrode in the solution for