Brownlee Precision 440 - High Performance Four-channel Amplifier & Signal Conditioner
In addition to the Model 410 amplifier's features, the Model 440 offers an 8-pole Bessel lowpass filter, auto-zeroing, a line notch filter, highpass filter, multiple memories per channel, and a digital voltmeter on 2 channels. A wide bandwidth of over 500 kHz at all gains insures smooth recordings.The Brownlee Precision Model 440 incorporates four channels of sophisticated amplifier and filter circuitry in a friendly easy-to-u…
The supplier does not provide quotations for this product through SelectScience. You can search for similar products in our Product Directory.
In addition to the Model 410 amplifier's features, the Model 440 offers an 8-pole Bessel lowpass filter, auto-zeroing, a line notch filter, highpass filter, multiple memories per channel, and a digital voltmeter on 2 channels. A wide bandwidth of over 500 kHz at all gains insures smooth recordings.
The Brownlee Precision Model 440 incorporates four channels of sophisticated amplifier and filter circuitry in a friendly easy-to-use instrument. Each channel consists of a high gain/low noise amplifier, an 8-pole Bessel lowpass filter, a highpass filter, a line notch filter, and output offset controls. A control knob sets the amplifier parameters and the values are displayed on a bright LED alphanumeric readout.
* Clear front panel controls for all settings
* Gains from 0.1 to 10,000 in fine, calibrated steps
* Single-ended or differential inputs
* 8 pole Bessel lowpass filter with range 20 Hz to 50 kHz
* Highpass filter with frequency range .01 Hz to 100 Hz
* Output offset control to shift output up to ±10 Volts
* Auto-zero feature to reset the output to the baseline level
* Notch filter to suppress line noise
* Digital Voltmeter on channels 1 and 2
* Memories which hold multiple setups
* Powerful output which can directly drive transducers
* Wide bandwidth: greater than 500 kHz on all gains
Please note your country's line (mains) voltage.
Analysis of Bisphenol A in Toys by HPLC with Fluorescence Detection
Over the past decade there have been many health concerns about BPA on the human body, including effect on thyroid function and certain cancers. Therefore, the levels of BPA in specific products, such as children’s toys, is closely monitored. This application note presents an effective method for the extraction and HPLC analysis of BPA in three children’s toys using the PerkinElmer Altus™ HPLC System. The sensitivity levels were well below the maximum safe levels stipulated by both the FDA and EFSA regulatory agencies.
