+359 2 994 22 40  
office@dial-ltd.com

1830, Sofia - Buhovo
111, Mina Buhovo Str.

Services

DIAL Ltd. performs a wide range of services:

  • Water sampling and on-site measurements of temperature, water level, flow rate, pH, conductivity, etc.;
  • Collection of soil samples with coordinate capture, gamma background measurements and surface contamination on site;
  • Performing laboratory chemical and radiological analyzes;
  • Reports preparation on the state of the environment and radiation safety;
  • Control of radioactivity of goods, materials and products in production, import and export.

For its activity DIAL LTD has been evaluated and certified by TÜV NORD Bulgaria EOOD, according to the requirements of BDS EN ISO 9001: 2015, Certificate № 32 100 180011, issued on 25.01.2018, valid until 24.01.2021 for the following activities: sampling and testing of soil, water, sludge, building materials and wastes, food and atmospheric air by chemical, physicochemical and radiological indicators. Monitoring the status and change of environmental components and offering options for managerial decisions. Control of radioactivity of goods, materials and products in production, import and export. Assessment of radiation load and health risk. Preparation of projects in the field of environmental control and protection and radiation safety.

DIAL Ltd. owns License from NRA: series Р-80315, registration № 04273, issued on 25.11.2013, valid until 24.11.2018 for work with sources of ionizing radiation; NRA ARRANGEMENT: No ВС 482, issued on 22.11.2013, valid until 24.11.2018г. for the temporary storage of radioactive substances arising from the activities associated with or associated with such sources of ionizing radiation.

The Testing Laboratory of DIAL Ltd. is accredited by EA BAS according to BDS ENISO / IEC 17025: 2006, Certificate of Accreditation issued by IA BSA Reg. No 73 LI / 30.03.2017, valid until 30.03.2021.

SAMPLING
(within the scope of accreditation)

WATERS
samples from lakes and dams
samples of drinking water and water for food and beverage production
samples of rivers and water courses, rainfall samples
wastewater samples
groundwater samples
samples of sludge and sediment
storage and preservation of samples
SOILS

Table 1

ON-SITE MEASUREMENTS

DOSIMETRY

Activity of solid materials intended for recycling, reuse or disposal as non-radioactive waste
Assessment of surface contamination. Beta-emitters (maximum beta energy greater than 0.15 MeV) and alpha-emitters
Dosimetry of gamma rays
Long-term washability testing of molds of solidified radioactive waste

 PHYSICO-CHEMICAL AND CHEMICAL

pH
Temperature
Chemical indicators

Table 2

WATERS
(within the scope of accreditation)

RADIOLOGICAL

INDICATORS

Natural Uranium (Unat.)
Radium-226 (226Ra)
Total α-activity
Total β-activity
Radon-222 (222Rn)
Tritium (3H)
Bulk activity of more than 50 radionuclides (natural and technogenic)

PHYSICO-

CHEMICAL AND

CHEMICAL

INDICATORS 

Active reaction (pH)
Odor, color, temperature
Total dry residue, undissolved and dissolved matter, loss of ignition
Conductivity
Oxidation-reduction potential
Total hardness
Ammonia (NH3) / Ammonium ions (NH4 +) / Nitrogen ammonium (N-NH4 +)
Nitrate ions (NO3-), Nitrogen nitrate (N-NO3-)
Nitrite ions (NO2 -), Nitrogen nitrite (N-NO2-)
Kjeldahl Nitrogen (NKjeldahl)
Organic Nitrogen
Total Nitrogen
Cyanides (CN-) are common and free
Sulphates (SO42-)
Dissolved sulfides and free hydrogen sulphide
Phosphates (PO43-)
Chlorides (Cl-)
Total, residual and free chlorine (Cl)
Alkalinity (carbonate and total)
Carbonates (CO32-)
Hydrogen carbonates (HCO3-)
Fluoride (F-)
Dissolved O2 / Saturation with O2
Oxidation (COD)
Permanent oxidation
Biochemical Oxygen Needs (BOD5)
Total Organic Carbon
Mercury (Hg)
Chromium hexavalent (Cr6 +) and trivalent (Cr3 +)
Anionic Surfactants (MBAS) / Anionic Detergents
Hydrocarbon Index for Petroleum Products
Silver (Ag) / Aluminum (Al) / Arsenic (As) / Boron (B) / Barium (Ba) / Beryllium (Be) / Bismuth (Bi) / Calcium (Ca) / Cadmium (Cd) / Cobalt (Co) / Chromium (Cr) / Copper (Cu) / Iron (Fe) / Potassium (K) / Lithium (Li) / Magnesium (Mg) / Manganese (Mn) / Molybdenum / (Mg) / Manganese (Mn) / Molybdenum (Mo) / Sodium (Na) / Nickel (Ni)
Phenols/ Phenol Index
Extractable substances
Vegetable and Animal Fats and Oils

Table 3

SOILS AND SLUDGE
(within the scope of accreditation)

RADIOLOGICAL

INDICATORS

Radiation gamma background
Radioactive Surface α- and β-Contamination / Specific Surface α- and β-Activity
Bulk Radon in Ground Air and Radon Exhalation
Specific activity of γ-radionuclides
Natural Uranium (Unat)
Gamma-emitting radionuclides

PHYSICO-

CHEMICAL

AND CHEMICAL

INDICATORS
                       

Conductivity
Active Reaction (pH)
Dry matter and water content
Water-soluble salts and their components
Total nitrogen (Kjeldahl N)
Chlorides (Cl-)
Nitrates (NO3-)
Ammonium (NH4 +)
Sulphates (SO42-)
Carbonates (CO32-)
Arsenic (As), Calcium (Ca), Cadmium (Cd), Cobalt (Co), Chrome (Cr), Copper (Cu), Iron (K), Manganese (Mn), Magnesium (Mg), Sodium (Na), Nickel (Ni), Phosphorus (P), Lead (Pb), Zinc (Zn) , Mercury (Hg)
Hydrocarbon Index for Petroleum Products
Hygroscopic moisture
Loss on ignition
Particle size analysis
Organic substances either (organic carbon and humus)

Table 4

MATERIALS AND WASTE,
IONEXCHANGE RESINS

(within the scope of accreditation)

RADIOLOGICAL

INDICATORS

Radioactive Surface α- and β-Contamination / Specific Surface α- and β-Activity
Bulk Radon in Ground Air and Radon Exhalation
Specific activity of γ-radionuclides
Natural Uranium (Unat)

PHYSICO-CHEMICAL AND CHEMICAL INDICATORS
                       

Conductivity
Active Reaction (pH)
Cadmium (Cd), Cobalt (Co), Chrome (Cr), Copper (Cu), Manganese (Mn) Sodium (Na), Nickel (Ni), Phosphorus (P), Lead (Pb), Zinc (Zn) , Mercury (Hg)

Table 5

FOOD, FRUIT AND VEGETABLE
JUICES, VEGETABLES AND
VEGETABLE PRODUCTS

(within the scope of accreditation)

RADIOLOGICAL

INDICATORS

Specific activity of γ-radionuclides
Natural Uranium (Unat)

PHYSICO-CHEMICAL AND CHEMICAL INDICATORS

Active Reaction (pH)
Sulphates (SO42-)
Nitrates (NO3-)/ Nitrites (NO2 -)
Sodium (Na), Potassium (K), Calcium (Ca), Magnesium (Mg), Lead (Pb), Cadmium (Cd), Zinc (Zn), Chromium (Cu), Iron Al (Al), Arsenic (As), Nickel (Ni), Tin (Sn), Mercury (Hg)

Table 6

ATMOSPHERIC AIR
(within the scope of accreditation)

RADIOLOGICAL

INDICATORS

Gamma-dose rate
Radioactive alpha- and beta-radiation
Activity of Radon in ground air
Exhalation of Radon
Activity of more than 50 radionuclides (natural and technogenic)

NON-RADIOLOGICAL INDICATORS

Total suspended powder

Table 7