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The APS 113PUF Sampler has been designed for monitoring Pesticides, Polynuclear Aromatic Hydrocarbons (PAHs) and Dioxins (PCDDs) in ambient air. Air enters the system through a Cyclone that traps the course particulates so that only PM10 size particles reach the filter holder. The system uses a Polyurethane Foam (PUF) sorbent placed below a particulate filter of 100mm diameter.

The PUF holder is compatible with standard 75mm long, 60mm Día PUF cartridges prescribed in applicable EPA methods TO-4A, TO-9A & TO-13A for high volume sampling of Dioxins, Furans etc. The APS 113PUF Sampler has been designed for monitoring Pesticides, Polynuclear Aromatic Hydrocarbons (PAHs) and Dioxins (PCDDs) in ambient air.

The APS 113BL sampler uses an improved cyclone with sharper cut-off (D50 at 10 microns) to separate the coarser particulates from the air stream before filtering it on the glass microfibre filter. By using the APS 113BL, measurement of Respirable Particulate Matter can be done accurately and TSPM can also be assessed by collection of dust retained in the cyclone cup.

• Brushless blower reduces equipment downtime and maintenance effort.
• Provision of light for flow and time reading during night.
• Toolbox within the instrument.
• Lockable casters, top cover and gaseous attachment.
• Improved cabinet design which is more sturdy and durable with SS hardware.
• Electromagnetic Interference (EMI) to TVs totally eliminated.

The APS 311NLuses an IMPORTED brushless, continuous rated induction motor driven blower to significantly reduce equipment downtime, maintenance efforts and inconvenience to community with significantly reduced noise. This new improved PM 10 sampler avoids problems arising due to frequent brush wear and limited armature life of blowers and noise. Special features:Significantly reduced noise as compared to most PM 10 instruments in the market.

Blower with in-built thermal cut-off eliminating the need for a stabilizer. Brushless blower reduces equipment downtime and maintenance effort.Lockable top cover and gaseous attachment.Improved cabinet design which is sturdier and more durable with SS hardware.Electromagnetic Interference (EMI) to TVs totally eliminated Additional advantage with this blower is very low variation in flow rate in 190-230V input power supply range.

Simultaneous sampling of PM10 and PM2.5 Particulates. Two part cabinet ensures that PM2.5 filter remains close to ambient air temperature at all times. Low sampling rate of 1m3/hr reduced filter choking even in areas of high PM concentration Critical Orifice maintains constant flow rate. Oil free pump requires very little maintenance. Induction motor driven pump is immune to voltage fluctuation.

• Brushless blower reduces equipment downtime and maintenance effort.
• Provision of light for flow and time reading during night.
• Toolbox within the instrument.
• Lockable casters, top cover and gaseous attachment.
• Improved cabinet design which is more sturdy and durable with SS hardware.
• Electromagnetic Interference (EMI) to TVs totally eliminated.

Nitrogen (N) is important for plant growth and development, and of the macronutrients, is often the one that is most limiting. Soil nitrate (NO3) and ammonium (NH4) are both forms of inorganic nitrogen that are readily available for use by plants. They are formed from the mineralization (by microorganisms) of organic forms of N such as soil organic matter, crop residue, and manures.

Soluble fertilizers also provide nitrate and ammonium in forms that can be used by plants. Nitrogen in the soluble forms is mobile in the soil, and nitrate can be leached below the root zone of the crop. Both forms can be transported off site in runoff due to rain or irrigation, which contributes to eutrophication of surface waters due to excess growth of algae and microorganisms. Knowing the content of plant available nitrogen is important to assure that the crop has enough for adequate growth, but excess nitrogen is not running off the field.