Bids Are Invited For Acquisition Of Permanent Materials, Intended To Meet The Needs Of The São Luís School F ... in Brazil

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Skimmer Filter For Marine Aquariums Saltwater Lakes – Minimum Specifications: Type: Protein Skimmer Filter Application: Marine Aquariums Or Saltwater Lakes. Use: In Marine Aquariums Minimum Pump Flow: 2,000 L/H Or Higher (Varies Depending On Model). Aquarium Capacity: Minimum 1,500 L. Operation: Internal Pump With Needles Or Venturi Rotor For Generation Of Microbubbles. Body In Anti-Corrosive Material, Resistant To Salt Water (High-Transparency Acrylic Or Pvc). Collector With Removable Cover. Maximum Electrical Consumption: Up To 40 W Voltage: 220V) Or Bivolt Maximum Noise: Low Noise Level (Preferably Less Than 50 Db). Approximate Measurements: Height: 45 Cm To 60 Cm Body Diameter: 15 Cm To 25 Cm Base Area: 20 Cm X 20 Cm To 30 Cm X 30 Cm, Internal Skimmer Minimum Specifications: Type: Internal Skimmer, Use: Marine Aquariums. Capacity: Up To 500 Liters. Electrical Supply: 220V Or Bivolt. Pump: Built-In Silent, With Needle Rotor For Generating Fine Microbubbles. Collecting Cup: Removable, With Lid. Material: Body In High Transparency Acrylic Or Pvc Resistant To Salt Water. Base: With Suction Cups Or Stand For Stable Fixation. Noise: Low Sound Level Operation (Preferably Less Than 50 Db). Approximate Measurements: Height: 35 To 45 Cm; Body Diameter: 10 To 15 Cm; Base: 15 Cm Ph, Orp (Oxidation Reduction Potential), Electrical Conductivity (Ec), Total Dissolved Solids (Tds), Resistivity, Salinity And Temperature. Probe: Interchangeable Multiparameter Sensor, With Cable Of At Least 1 Meter. Approximate Ranges: Ph: 0 To 14 Orp: ± 1000 Mv Ec: 0 To 200 Ms/Cm Tds: 0 To 100 G/L Resistivity: Up To 20 Mω·Cm Salinity: Up To 70 Ppt (Or Equivalent In Psu) Temperature: -5°C To 60°C. Accuracy: Ph ±0.01; Orp ±1 Mv; Ec ±1% F.S. Display: Backlit Lcd Digital Screen, Simultaneous Reading Of At Least 3 Parameters Power: Internal Rechargeable Battery Or Aa Batteries, Minimum Autonomy Of 8 Hours. Approximate Dimensions: Meter Body: 20 × 8 × 4 Cm (Hxwxd), Drying Oven With Forced Air Circulation Minimum Specifications: Internal Capacity: Approximately 85 Liters. Internal Dimensions (H X W X D): About 45 × 45 × 42 Cm. External Dimensions (H Accuracy: ±1°C. Thermal Homogeneity: ±4°C Throughout The Chamber. Temperature Sensor: Type Pt100 Class A.Timer: Programmable From 1 To 9,999 Minutes, With A Minimum Increment Of 1 Minute. Heating System: Armored Resistance In Stainless Steel, Easy To Replace. Thermal Insulation: Glass Wool On All Walls And The Door. Air Circulation: Forced, Horizontal Or Circular Direction, By Microfans Air Renewal: Adjustable Device For Internal Air Renewal And Superior Breathing For Gases, Humidity Or Accommodation And Thermometer., Industrial Pelletizer Minimum Specifications: Production Capacity: Up To 200 Kg/H (Variation Depending On The Type Of Material And Granulometry) Electric Motor: Minimum Power Of 4. 5 Kw (Equivalent To 6Cv) Electrical Voltage: 220V (Single-Phase Or Three-Phase Must Be Specified, Depending On Local Availability) Pelletizing System: Flat Matrix Type Pellet Granulometry: Variable, Determined By The Installed Matrix (Must Allow

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